{
  "frequency": "Monthly",
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      "date": "1968-01-01",
      "value": 1316.77
    },
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      "date": "1968-02-01",
      "value": 1358.78
    },
    {
      "date": "1968-03-01",
      "value": 1412.75
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      "date": "1968-04-01",
      "value": 1477.66
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      "date": "1968-05-01",
      "value": 1538.42
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      "date": "1968-06-01",
      "value": 1614.48
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      "date": "1968-07-01",
      "value": 1685.67
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      "date": "1968-08-01",
      "value": 1769.11
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      "date": "1968-09-01",
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      "date": "1968-10-01",
      "value": 1955.13
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      "date": "1968-11-01",
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      "date": "1968-12-01",
      "value": 2041.54
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      "date": "1969-01-01",
      "value": 2137.51
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      "date": "1969-02-01",
      "value": 2216.34
    },
    {
      "date": "1969-03-01",
      "value": 2307.7
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      "date": "1969-04-01",
      "value": 2438.57
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    {
      "date": "1969-05-01",
      "value": 2593.69
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    {
      "date": "1969-06-01",
      "value": 2727.96
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    {
      "date": "1969-07-01",
      "value": 2863.67
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    {
      "date": "1969-08-01",
      "value": 2997.2
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      "date": "1969-09-01",
      "value": 3158.96
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      "date": "1969-10-01",
      "value": 3326.94
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      "date": "1969-11-01",
      "value": 3463.95
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      "date": "1970-02-01",
      "value": 3802.58
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      "date": "1970-03-01",
      "value": 3908.14
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      "date": "1970-04-01",
      "value": 4033.54
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      "date": "1970-05-01",
      "value": 4137.9
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      "date": "1970-06-01",
      "value": 4280.08
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      "date": "1970-07-01",
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      "date": "1970-08-01",
      "value": 4542.39
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      "date": "1970-09-01",
      "value": 4686.66
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      "date": "1970-10-01",
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      "date": "1970-12-01",
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      "date": "1971-02-01",
      "value": 7232.87
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      "date": "1971-03-01",
      "value": 7297.56
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      "date": "1971-04-01",
      "value": 7459.91
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      "date": "1971-05-01",
      "value": 7642.01
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      "date": "1971-06-01",
      "value": 7739.85
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      "date": "1971-07-01",
      "value": 7900.86
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      "date": "1971-08-01",
      "value": 8044.78
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      "date": "1971-09-01",
      "value": 8230.75
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      "date": "1971-10-01",
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      "value": 8305.86
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      "date": "1971-12-01",
      "value": 8245.33
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      "date": "1972-01-01",
      "value": 8092.01
    },
    {
      "date": "1972-02-01",
      "value": 8093.82
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    {
      "date": "1972-03-01",
      "value": 8235.3
    },
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      "date": "1972-04-01",
      "value": 8427.95
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    {
      "date": "1972-05-01",
      "value": 8578.25
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      "date": "1972-06-01",
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      "date": "1972-07-01",
      "value": 8957.98
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      "date": "1972-08-01",
      "value": 9133.16
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      "date": "1972-09-01",
      "value": 9307.74
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      "date": "1972-10-01",
      "value": 9390.08
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      "date": "1972-11-01",
      "value": 9401.8
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      "date": "1972-12-01",
      "value": 9379.24
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      "date": "1973-01-01",
      "value": 9380.86
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      "date": "1973-02-01",
      "value": 9505.71
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    {
      "date": "1973-03-01",
      "value": 9655.66
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      "date": "1973-04-01",
      "value": 9824.85
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      "date": "1973-05-01",
      "value": 10043.68
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      "date": "1973-06-01",
      "value": 10347.07
    },
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      "date": "1973-07-01",
      "value": 10530.74
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      "date": "1973-08-01",
      "value": 10800.76
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      "date": "1973-09-01",
      "value": 10933.55
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      "date": "1973-10-01",
      "value": 11187.7
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      "date": "1973-11-01",
      "value": 11362.28
    },
    {
      "date": "1973-12-01",
      "value": 11342.22
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    {
      "date": "1974-01-01",
      "value": 11326.78
    },
    {
      "date": "1974-02-01",
      "value": 11326.44
    },
    {
      "date": "1974-03-01",
      "value": 11377.0
    },
    {
      "date": "1974-04-01",
      "value": 11582.43
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    {
      "date": "1974-05-01",
      "value": 11952.53
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    {
      "date": "1974-06-01",
      "value": 12289.55
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      "date": "1974-07-01",
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      "date": "1974-08-01",
      "value": 13026.68
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      "date": "1974-09-01",
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      "date": "1974-10-01",
      "value": 13530.65
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      "date": "1974-11-01",
      "value": 13575.61
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      "date": "1974-12-01",
      "value": 13241.26
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      "date": "1975-01-01",
      "value": 13274.85
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      "date": "1975-02-01",
      "value": 13221.56
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      "date": "1975-03-01",
      "value": 13177.87
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      "date": "1975-04-01",
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      "date": "1975-05-01",
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      "date": "1975-06-01",
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      "date": "1975-07-01",
      "value": 13885.67
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      "date": "1975-08-01",
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      "date": "1975-09-01",
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      "date": "1975-10-01",
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      "date": "1975-11-01",
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      "date": "1975-12-01",
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      "date": "1976-01-01",
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      "date": "1976-02-01",
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    {
      "date": "1976-03-01",
      "value": 14314.1
    },
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      "date": "1976-04-01",
      "value": 14596.04
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    {
      "date": "1976-05-01",
      "value": 14801.5
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      "date": "1976-06-01",
      "value": 15085.81
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      "date": "1976-07-01",
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      "date": "1976-09-01",
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      "date": "1976-10-01",
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      "date": "1976-12-01",
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    {
      "date": "1977-01-01",
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      "date": "1977-02-01",
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    {
      "date": "1977-03-01",
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      "date": "1977-04-01",
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      "date": "1977-05-01",
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      "date": "1977-06-01",
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      "date": "1977-07-01",
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      "date": "1977-08-01",
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      "date": "1977-09-01",
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      "date": "1977-10-01",
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      "date": "1977-11-01",
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      "date": "1977-12-01",
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      "date": "1978-01-01",
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      "date": "1978-02-01",
      "value": 36894.21
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      "date": "1978-03-01",
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      "date": "1978-04-01",
      "value": 38343.03
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      "date": "1978-05-01",
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      "date": "1978-06-01",
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      "date": "1978-07-01",
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      "date": "1978-08-01",
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      "date": "1978-09-01",
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      "date": "1978-10-01",
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      "date": "1978-11-01",
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      "date": "1978-12-01",
      "value": 45690.95
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      "date": "1979-01-01",
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      "date": "1979-02-01",
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      "date": "1979-03-01",
      "value": 46369.7
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      "date": "1979-04-01",
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      "date": "1979-05-01",
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      "date": "1979-06-01",
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      "date": "1979-07-01",
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      "date": "1979-08-01",
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      "date": "1979-09-01",
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      "date": "1979-10-01",
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      "date": "1979-12-01",
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    {
      "date": "1980-01-01",
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      "date": "1980-02-01",
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    {
      "date": "1980-03-01",
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      "date": "1980-04-01",
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      "date": "1980-05-01",
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      "date": "1980-06-01",
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      "date": "1980-07-01",
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      "date": "1980-08-01",
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      "date": "1980-09-01",
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      "date": "1980-12-01",
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      "date": "1981-01-01",
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      "date": "1981-02-01",
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      "date": "1981-03-01",
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      "date": "1981-04-01",
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      "date": "1981-05-01",
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      "date": "1981-12-01",
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      "date": "1982-01-01",
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      "date": "1982-02-01",
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      "date": "1982-03-01",
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      "date": "1982-04-01",
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      "date": "1983-01-01",
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      "date": "1983-03-01",
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}