year,IPC2
1850,8.63e-07
1851,8.63e-07
1852,8.63e-07
1853,8.63e-07
1854,8.63e-07
1855,8.63e-07
1856,8.63e-07
1857,8.63e-07
1858,8.63e-07
1859,8.63e-07
1860,8.63e-07
1861,8.63e-07
1862,8.63e-07
1863,8.63e-07
1864,8.63e-07
1865,8.63e-07
1866,8.64e-07
1867,8.64e-07
1868,8.64e-07
1869,8.64e-07
1870,8.64e-07
1871,8.64e-07
1872,8.64e-07
1873,8.64e-07
1874,8.64e-07
1875,8.64e-07
1876,8.64e-07
1877,8.64e-07
1878,8.64e-07
1879,8.64e-07
1880,8.64e-07
1881,8.64e-07
1882,8.64e-07
1883,8.64e-07
1884,8.64e-07
1885,8.64e-07
1886,8.64e-07
1887,8.64e-07
1888,8.64e-07
1889,8.65e-07
1890,8.65e-07
1891,9.89e-07
1892,1.33e-06
1893,1.85e-06
1894,2.51e-06
1895,3.25e-06
1896,4.04e-06
1897,4.839999999999999e-06
1898,5.6e-06
1899,6.28e-06
1900,6.83e-06
1901,7.29e-06
1902,7.7e-06
1903,8.09e-06
1904,8.449999999999999e-06
1905,8.81e-06
1906,9.169999999999999e-06
1907,9.54e-06
1908,9.93e-06
1909,1.0399999999999999e-05
1910,1.08e-05
1911,1.1400000000000001e-05
1912,1.1900000000000001e-05
1913,1.25e-05
1914,1.31e-05
1915,1.38e-05
1916,1.44e-05
1917,1.52e-05
1918,1.59e-05
1919,1.67e-05
1920,1.7500000000000002e-05
1921,2.12e-05
1922,3.01e-05
1923,4.31e-05
1924,5.92e-05
1925,7.75e-05
1926,9.69e-05
1927,0.00011700000000000001
1928,0.000135
1929,0.000152
1930,0.00016700000000000002
1931,0.000179
1932,0.00019
1933,0.000202
1934,0.000212
1935,0.000223
1936,0.00023400000000000002
1937,0.000244
1938,0.000255
1939,0.000266
1940,0.00027800000000000004
1941,0.000289
1942,0.000301
1943,0.000314
1944,0.00032700000000000003
1945,0.00034100000000000005
1946,0.00035499999999999996
1947,0.000371
1948,0.00038700000000000003
1949,0.00040500000000000003
1950,0.000424
1951,0.000444
1952,0.00046600000000000005
1953,0.00049
1954,0.000516
1955,0.0005430000000000001
1956,0.000571
1957,0.000601
1958,0.000631
1959,0.000662
1960,0.0006929999999999999
1961,0.000728
1962,0.000767
1963,0.0008100000000000001
1964,0.000855
1965,0.000901
1966,0.000945
1967,0.000988
1968,0.00103
1969,0.00103
1970,0.0009459999999999999
1971,0.0012900000000000001
1972,0.00188
1973,0.00409
1974,0.00381
1975,0.00261
1976,0.0028399999999999996
1977,0.00357
1978,0.0027
1979,0.0033900000000000002
1980,0.00256
1981,0.00257
1982,0.00259
1983,0.00307
1984,0.00354
1985,0.0035499999999999998
1986,0.00361
1987,0.00423
1988,0.00429
1989,0.00435
1990,0.00432
1991,0.0045
1992,0.00344
1993,0.0035
1994,0.0037400000000000003
1995,0.007940000000000001
1996,0.0123
1997,0.0165
1998,0.0208
1999,0.0251
2000,0.0252
2001,0.0253
2002,0.0254
2003,0.0255
2004,0.0256
2005,0.0257
2006,0.0258
2007,0.0259
2008,0.026
2009,0.0261
2010,0.026199999999999998
2011,0.038700000000000005
2012,0.028399999999999998
2013,0.033299999999999996
2014,0.0318
2015,0.0365
2016,0.103
2017,0.0466
2018,0.0347