year,IPC2
1850,4.77e-05
1851,4.77e-05
1852,4.77e-05
1853,4.77e-05
1854,4.77e-05
1855,4.77e-05
1856,4.77e-05
1857,4.77e-05
1858,4.77e-05
1859,4.77e-05
1860,4.77e-05
1861,4.77e-05
1862,4.77e-05
1863,4.78e-05
1864,4.78e-05
1865,4.78e-05
1866,4.78e-05
1867,4.78e-05
1868,4.78e-05
1869,4.78e-05
1870,4.78e-05
1871,4.78e-05
1872,4.78e-05
1873,4.78e-05
1874,4.78e-05
1875,4.78e-05
1876,4.78e-05
1877,4.78e-05
1878,4.78e-05
1879,4.78e-05
1880,4.78e-05
1881,4.78e-05
1882,4.78e-05
1883,4.78e-05
1884,4.78e-05
1885,4.78e-05
1886,4.78e-05
1887,4.78e-05
1888,4.78e-05
1889,4.78e-05
1890,4.78e-05
1891,5.47e-05
1892,7.37e-05
1893,0.000102
1894,0.00013900000000000002
1895,0.00017999999999999998
1896,0.000224
1897,0.000268
1898,0.00031
1899,0.000347
1900,0.000378
1901,0.00040300000000000004
1902,0.000426
1903,0.000447
1904,0.00046800000000000005
1905,0.00048699999999999997
1906,0.000507
1907,0.000528
1908,0.000549
1909,0.0005729999999999999
1910,0.0005989999999999999
1911,0.000628
1912,0.0006590000000000001
1913,0.000691
1914,0.000725
1915,0.000761
1916,0.000799
1917,0.000839
1918,0.00088
1919,0.000924
1920,0.000969
1921,0.0011799999999999998
1922,0.0016699999999999998
1923,0.0023799999999999997
1924,0.00328
1925,0.00429
1926,0.00536
1927,0.00645
1928,0.00749
1929,0.00843
1930,0.009210000000000001
1931,0.009890000000000001
1932,0.0105
1933,0.0112
1934,0.011800000000000001
1935,0.0123
1936,0.0129
1937,0.0135
1938,0.0141
1939,0.0147
1940,0.0154
1941,0.016
1942,0.0167
1943,0.0174
1944,0.0182
1945,0.019
1946,0.019899999999999998
1947,0.0208
1948,0.0217
1949,0.022699999999999998
1950,0.0238
1951,0.025
1952,0.026199999999999998
1953,0.027600000000000003
1954,0.0291
1955,0.030600000000000002
1956,0.0322
1957,0.0339
1958,0.0356
1959,0.0373
1960,0.0391
1961,0.041100000000000005
1962,0.0433
1963,0.045700000000000005
1964,0.0482
1965,0.0507
1966,0.053200000000000004
1967,0.055600000000000004
1968,0.0578
1969,0.0603
1970,0.08120000000000001
1971,0.214
1972,0.123
1973,0.153
1974,0.247
1975,0.283
1976,0.332
1977,0.215
1978,0.216
1979,0.282
1980,0.272
1981,0.29
1982,0.396
1983,0.355
1984,0.398
1985,0.426
1986,0.458
1987,0.787
1988,0.667
1989,0.755
1990,0.769
1991,0.634
1992,0.567
1993,0.529
1994,0.471
1995,0.335
1996,0.328
1997,0.306
1998,0.337
1999,0.329
2000,0.324
2001,0.294
2002,0.292
2003,0.348
2004,0.408
2005,0.473
2006,0.501
2007,0.54
2008,0.583
2009,0.557
2010,0.604
2011,0.613
2012,0.657
2013,0.692
2014,0.726
2015,0.746
2016,0.769
2017,0.738
2018,0.642