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
1941,0.015099999999999999
1942,0.0157
1943,0.016399999999999998
1944,0.017
1945,0.0177
1946,0.0185
1947,0.0192
1948,0.0201
1949,0.0209
1950,0.0219
1951,0.0229
1952,0.0241
1953,0.0253
1954,0.026600000000000002
1955,0.028
1956,0.0295
1957,0.031
1958,0.0325
1959,0.0341
1960,0.0357
1961,0.0375
1962,0.0395
1963,0.0418
1964,0.0441
1965,0.0464
1966,0.0487
1967,0.0509
1968,0.052899999999999996
1969,0.054700000000000006
1970,0.053899999999999997
1971,0.143
1972,0.0823
1973,0.102
1974,0.166
1975,0.189
1976,0.222
1977,0.144
1978,0.145
1979,0.189
1980,0.182
1981,0.194
1982,0.265
1983,0.238
1984,0.267
1985,0.286
1986,0.233
1987,0.268
1988,0.215
1989,0.217
1990,0.208
1991,0.129
1992,0.128
1993,0.128
1994,0.128
1995,0.128
1996,0.128
1997,0.128
1998,0.128
1999,0.128
2000,0.13
2001,0.129
2002,0.135
2003,0.139
2004,0.141
2005,0.142
2006,0.134
2007,0.0997
2008,0.0147
2009,0.00524
2010,0.009640000000000001
2011,0.0202
2012,0.0181
2013,0.015300000000000001
2014,0.0152
2015,0.0157
2016,0.0198
2017,0.0174
2018,0.0156