year,IPC2
1850,4.4e-05
1851,4.4e-05
1852,4.4e-05
1853,4.4e-05
1854,4.4e-05
1855,4.4e-05
1856,4.4e-05
1857,4.4e-05
1858,4.4e-05
1859,4.4e-05
1860,4.4e-05
1861,4.4e-05
1862,4.4e-05
1863,4.4e-05
1864,4.4e-05
1865,4.4e-05
1866,4.4e-05
1867,4.4e-05
1868,4.4e-05
1869,4.4e-05
1870,4.4e-05
1871,4.4e-05
1872,4.4e-05
1873,4.4e-05
1874,4.4e-05
1875,4.4e-05
1876,4.4e-05
1877,4.4e-05
1878,4.4e-05
1879,4.4e-05
1880,4.4e-05
1881,4.4e-05
1882,4.4e-05
1883,4.4e-05
1884,4.4e-05
1885,4.4e-05
1886,4.4e-05
1887,4.4e-05
1888,4.4e-05
1889,4.4e-05
1890,4.4e-05
1891,5.14e-05
1892,7.18e-05
1893,0.000103
1894,0.00014199999999999998
1895,0.000186
1896,0.00023300000000000003
1897,0.00028000000000000003
1898,0.000325
1899,0.000366
1900,0.000399
1901,0.000426
1902,0.00045
1903,0.00047299999999999995
1904,0.000495
1905,0.000516
1906,0.000537
1907,0.000559
1908,0.000583
1909,0.000608
1910,0.0006360000000000001
1911,0.0006670000000000001
1912,0.0007
1913,0.000735
1914,0.000771
1915,0.0008100000000000001
1916,0.000851
1917,0.000893
1918,0.0009379999999999999
1919,0.000985
1920,0.00103
1921,0.00123
1922,0.0016899999999999999
1923,0.0023599999999999997
1924,0.00319
1925,0.00413
1926,0.00513
1927,0.00614
1928,0.00711
1929,0.007980000000000001
1930,0.00872
1931,0.009349999999999999
1932,0.00996
1933,0.0106
1934,0.0111
1935,0.011699999999999999
1936,0.0123
1937,0.0128
1938,0.0134
1939,0.013900000000000001
1940,0.0145
1941,0.0152
1942,0.0159
1943,0.0167
1944,0.0177
1945,0.018600000000000002
1946,0.0197
1947,0.0208
1948,0.0219
1949,0.023100000000000002
1950,0.024300000000000002
1951,0.0256
1952,0.027
1953,0.0285
1954,0.03
1955,0.0317
1956,0.0334
1957,0.0351
1958,0.036899999999999995
1959,0.038799999999999994
1960,0.040600000000000004
1961,0.0426
1962,0.044899999999999995
1963,0.047299999999999995
1964,0.0498
1965,0.0523
1966,0.054799999999999995
1967,0.0573
1968,0.0596
1969,0.0616
1970,0.061
1971,0.151
1972,0.0896
1973,0.11
1974,0.173
1975,0.197
1976,0.23
1977,0.152
1978,0.153
1979,0.197
1980,0.191
1981,0.203
1982,0.274
1983,0.247
1984,0.277
1985,0.295
1986,0.243
1987,0.278
1988,0.227
1989,0.233
1990,0.222
1991,0.152
1992,0.17
1993,0.17
1994,0.171
1995,0.173
1996,0.17
1997,0.176
1998,0.172
1999,0.175
2000,0.191
2001,0.207
2002,0.23
2003,0.256
2004,0.28
2005,0.306
2006,0.321
2007,0.313
2008,0.258
2009,0.266
2010,0.286
2011,0.309
2012,0.329
2013,0.349
2014,0.366
2015,0.377
2016,0.389
2017,0.372
2018,0.325