year,IPC2
1850,9.87e-05
1851,9.87e-05
1852,9.87e-05
1853,9.87e-05
1854,9.87e-05
1855,9.87e-05
1856,9.87e-05
1857,9.87e-05
1858,9.87e-05
1859,9.87e-05
1860,9.87e-05
1861,9.87e-05
1862,9.87e-05
1863,9.87e-05
1864,9.87e-05
1865,9.87e-05
1866,9.87e-05
1867,9.87e-05
1868,9.87e-05
1869,9.88e-05
1870,9.88e-05
1871,9.88e-05
1872,9.88e-05
1873,9.88e-05
1874,9.88e-05
1875,9.88e-05
1876,9.88e-05
1877,9.88e-05
1878,9.88e-05
1879,9.88e-05
1880,9.88e-05
1881,9.88e-05
1882,9.88e-05
1883,9.88e-05
1884,9.88e-05
1885,9.88e-05
1886,9.88e-05
1887,9.88e-05
1888,9.88e-05
1889,9.88e-05
1890,9.88e-05
1891,0.00011300000000000001
1892,0.000152
1893,0.000212
1894,0.000287
1895,0.000372
1896,0.000462
1897,0.000553
1898,0.00064
1899,0.000718
1900,0.000781
1901,0.000833
1902,0.0008810000000000001
1903,0.000925
1904,0.000966
1905,0.00101
1906,0.0010500000000000002
1907,0.00109
1908,0.00114
1909,0.0011799999999999998
1910,0.00124
1911,0.0013
1912,0.00136
1913,0.0014299999999999998
1914,0.0015
1915,0.00157
1916,0.00165
1917,0.00173
1918,0.00182
1919,0.00191
1920,0.002
1921,0.0024300000000000003
1922,0.00344
1923,0.0049299999999999995
1924,0.00677
1925,0.00886
1926,0.0111
1927,0.013300000000000001
1928,0.0155
1929,0.0174
1930,0.019
1931,0.020399999999999998
1932,0.0218
1933,0.023
1934,0.024300000000000002
1935,0.0255
1936,0.026699999999999998
1937,0.027899999999999998
1938,0.0292
1939,0.0304
1940,0.0317
1941,0.033100000000000004
1942,0.0345
1943,0.0359
1944,0.037399999999999996
1945,0.039
1946,0.040600000000000004
1947,0.0424
1948,0.0443
1949,0.046299999999999994
1950,0.0484
1951,0.0508
1952,0.0533
1953,0.056
1954,0.059
1955,0.0621
1956,0.0653
1957,0.0687
1958,0.0721
1959,0.0757
1960,0.0793
1961,0.0832
1962,0.0877
1963,0.09259999999999999
1964,0.0978
1965,0.103
1966,0.108
1967,0.113
1968,0.117
1969,0.121
1970,0.119
1971,0.123
1972,0.109
1973,0.112
1974,0.114
1975,0.104
1976,0.103
1977,0.105
1978,0.105
1979,0.11
1980,0.114
1981,0.109
1982,0.0999
1983,0.101
1984,0.105
1985,0.0968
1986,0.11
1987,0.101
1988,0.0995
1989,0.0993
1990,0.1
1991,0.0847
1992,0.0693
1993,0.0298
1994,0.0178
1995,0.0149
1996,0.0174
1997,0.0177
1998,0.019899999999999998
1999,0.026600000000000002
2000,0.0508
2001,0.0304
2002,0.0295
2003,0.054799999999999995
2004,0.0564
2005,0.0417
2006,0.0511
2007,0.0426
2008,0.0355
2009,0.0281
2010,0.030100000000000002
2011,0.0288
2012,0.030899999999999997
2013,0.0221
2014,0.018
2015,0.0205
2016,0.0156
2017,0.0256
2018,0.0285