year,IPC1
1850,2.24e-05
1851,2.35e-05
1852,2.48e-05
1853,2.62e-05
1854,2.76e-05
1855,2.91e-05
1856,3.07e-05
1857,3.24e-05
1858,3.4099999999999995e-05
1859,3.5799999999999996e-05
1860,3.7699999999999995e-05
1861,3.96e-05
1862,4.15e-05
1863,4.36e-05
1864,4.58e-05
1865,4.81e-05
1866,5.04e-05
1867,5.2900000000000005e-05
1868,5.55e-05
1869,5.82e-05
1870,6.1e-05
1871,6.39e-05
1872,6.71e-05
1873,7.04e-05
1874,7.39e-05
1875,7.76e-05
1876,8.14e-05
1877,8.53e-05
1878,8.939999999999999e-05
1879,9.35e-05
1880,9.769999999999999e-05
1881,0.000102
1882,0.000106
1883,0.000111
1884,0.000116
1885,0.00011999999999999999
1886,0.000125
1887,0.000131
1888,0.000136
1889,0.00014199999999999998
1890,0.000155
1891,0.000161
1892,0.00016700000000000002
1893,0.000174
1894,0.00018099999999999998
1895,0.000188
1896,0.00019600000000000002
1897,0.000204
1898,0.000213
1899,0.000222
1900,0.000231
1901,0.000241
1902,0.000253
1903,0.000265
1904,0.000279
1905,0.000292
1906,0.000306
1907,0.000319
1908,0.00033
1909,0.00034100000000000005
1910,0.00035
1911,0.000357
1912,0.000365
1913,0.000373
1914,0.000381
1915,0.000388
1916,0.00039400000000000004
1917,0.000399
1918,0.00040300000000000004
1919,0.00040500000000000003
1920,0.000406
1921,0.00040500000000000003
1922,0.000404
1923,0.00040100000000000004
1924,0.000397
1925,0.00039400000000000004
1926,0.00039
1927,0.00038700000000000003
1928,0.000384
1929,0.000382
1930,0.000381
1931,0.000384
1932,0.000389
1933,0.000398
1934,0.00041
1935,0.000424
1936,0.00044
1937,0.000457
1938,0.000474
1939,0.000492
1940,0.000509
1941,0.000526
1942,0.000545
1943,0.000566
1944,0.000588
1945,0.000611
1946,0.0006360000000000001
1947,0.0006630000000000001
1948,0.00069
1949,0.000719
1950,0.000749
1951,0.000781
1952,0.0008169999999999999
1953,0.000855
1954,0.000896
1955,0.0009379999999999999
1956,0.000983
1957,0.00103
1958,0.00107
1959,0.0011200000000000001
1960,0.00117
1961,0.00121
1962,0.00126
1963,0.00131
1964,0.0013700000000000001
1965,0.00175
1966,0.00188
1967,0.00188
1968,0.00204
1969,0.00229
1970,0.00257
1971,0.00226
1972,0.0029
1973,0.00294
1974,0.003
1975,0.00312
1976,0.0033799999999999998
1977,0.00366
1978,0.00417
1979,0.00457
1980,0.00478
1981,0.00498
1982,0.0053
1983,0.00532
1984,0.00538
1985,0.00551
1986,0.00534
1987,0.00488
1988,0.004690000000000001
1989,0.0045899999999999995
1990,0.00733
1991,0.00733
1992,0.00733
1993,0.00733
1994,0.00733
1995,0.00733
1996,0.00733
1997,0.00733
1998,0.00733
1999,0.00733
2000,0.00733
2001,0.00733
2002,0.011
2003,0.011
2004,0.011
2005,0.011
2006,0.00733
2007,0.011
2008,0.011
2009,0.011
2010,0.00733
2011,0.00733
2012,0.011
2013,0.011
2014,0.011
2015,0.011699999999999999
2016,0.0128
2017,0.013099999999999999
2018,0.018699999999999998