year,IPC1,IPC2
1850,4.06e-05,1.96e-05
1851,4.27e-05,2.06e-05
1852,4.4999999999999996e-05,2.17e-05
1853,4.75e-05,2.29e-05
1854,5.01e-05,2.42e-05
1855,5.28e-05,2.55e-05
1856,5.57e-05,2.69e-05
1857,5.8700000000000004e-05,2.83e-05
1858,6.18e-05,2.98e-05
1859,6.510000000000001e-05,3.14e-05
1860,6.840000000000001e-05,3.3e-05
1861,7.18e-05,3.46e-05
1862,7.539999999999999e-05,3.6400000000000004e-05
1863,7.92e-05,3.82e-05
1864,8.309999999999999e-05,4.01e-05
1865,8.730000000000001e-05,4.21e-05
1866,9.16e-05,4.4200000000000004e-05
1867,9.61e-05,4.63e-05
1868,0.000101,4.8599999999999995e-05
1869,0.000106,5.1e-05
1870,0.000111,5.3400000000000004e-05
1871,0.000116,5.6e-05
1872,0.000122,5.88e-05
1873,0.000128,6.17e-05
1874,0.000134,6.48e-05
1875,0.00014099999999999998,6.8e-05
1876,0.000148,7.13e-05
1877,0.000155,7.47e-05
1878,0.000162,7.829999999999999e-05
1879,0.00017,8.19e-05
1880,0.000177,8.55e-05
1881,0.000185,8.93e-05
1882,0.000193,9.31e-05
1883,0.000201,9.71e-05
1884,0.00020999999999999998,0.000101
1885,0.000219,0.00010499999999999999
1886,0.000228,0.00011
1887,0.000237,0.000114
1888,0.000247,0.00011899999999999999
1889,0.000257,0.000124
1890,0.00028100000000000005,0.000123
1891,0.000292,0.000123
1892,0.000303,0.000124
1893,0.000315,0.000124
1894,0.000328,0.000125
1895,0.000342,0.000125
1896,0.000356,0.000126
1897,0.000371,0.000126
1898,0.00038700000000000003,0.000127
1899,0.00040300000000000004,0.000127
1900,0.000419,0.000128
1901,0.000438,0.000129
1902,0.00045900000000000004,0.000129
1903,0.000482,0.00013000000000000002
1904,0.000506,0.000131
1905,0.000531,0.000131
1906,0.000555,0.000132
1907,0.000578,0.000133
1908,0.0006,0.000134
1909,0.000619,0.000135
1910,0.000635,0.000136
1911,0.0006490000000000001,0.00013800000000000002
1912,0.0006630000000000001,0.00013900000000000002
1913,0.0006770000000000001,0.00014099999999999998
1914,0.000691,0.00014199999999999998
1915,0.000703,0.00014399999999999998
1916,0.0007149999999999999,0.000146
1917,0.0007239999999999999,0.000148
1918,0.000731,0.00015
1919,0.000736,0.000152
1920,0.000737,0.000155
1921,0.000736,0.000157
1922,0.000733,0.00016
1923,0.000728,0.000163
1924,0.000722,0.000166
1925,0.0007149999999999999,0.00016900000000000002
1926,0.000708,0.00017299999999999998
1927,0.0007019999999999999,0.000177
1928,0.0006969999999999999,0.00018099999999999998
1929,0.000694,0.000185
1930,0.0006919999999999999,0.00019
1931,0.000696,0.000195
1932,0.000707,0.000201
1933,0.000723,0.000208
1934,0.000745,0.000215
1935,0.0007700000000000001,0.000222
1936,0.000799,0.00023
1937,0.000829,0.00023799999999999998
1938,0.000861,0.000246
1939,0.000892,0.000254
1940,0.000923,0.000262
1941,0.000955,0.00026900000000000003
1942,0.00099,0.00027600000000000004
1943,0.00103,0.00028199999999999997
1944,0.00107,0.00028799999999999995
1945,0.00111,0.00029499999999999996
1946,0.00116,0.00030199999999999997
1947,0.0012,0.00031
1948,0.00125,0.000319
1949,0.0021000000000000003,0.00032900000000000003
1950,0.00367,0.00034100000000000005
1951,0.00367,0.000358
1952,0.00733,0.000381
1953,0.00733,0.00041099999999999996
1954,0.011,0.000444
1955,0.011,0.000481
1956,0.011,0.0005200000000000001
1957,0.0147,0.0005600000000000001
1958,0.011,0.0005989999999999999
1959,0.0147,0.000637
1960,0.0147,0.000671
1961,0.0183,0.000707
1962,0.0183,0.000746
1963,0.022,0.000789
1964,0.0257,0.0008309999999999999
1965,0.0293,0.000873
1966,0.0257,0.000911
1967,0.0257,0.000944
1968,0.0293,0.0009699999999999999
1969,0.0293,0.000987
1970,0.0293,0.00106
1971,0.0367,0.00107
1972,0.0367,0.0011
1973,0.0367,0.00113
1974,0.033,0.00114
1975,0.0587,0.00117
1976,0.047700000000000006,0.00109
1977,0.08070000000000001,0.00109
1978,0.106,0.0012
1979,0.0953,0.0011899999999999999
1980,0.099,0.00121
1981,0.103,0.0011799999999999998
1982,0.114,0.00145
1983,0.114,0.0013700000000000001
1984,0.114,0.00133
1985,0.114,0.0011799999999999998
1986,0.114,0.00117
1987,0.114,0.00116
1988,0.114,0.00122
1989,0.121,0.00121
1990,0.103,0.00121
1991,0.107,0.00123
1992,0.11,0.00125
1993,0.11,0.00125
1994,0.114,0.0011899999999999999
1995,0.117,0.00123
1996,0.125,0.00126
1997,0.128,0.00128
1998,0.132,0.0012900000000000001
1999,0.136,0.0013
2000,0.143,0.00135
2001,0.147,0.00132
2002,0.147,0.00128
2003,0.154,0.0013
2004,0.15,0.00135
2005,0.161,0.0013700000000000001
2006,0.165,0.0013700000000000001
2007,0.172,0.0013700000000000001
2008,0.18,0.00136
2009,0.187,0.00135
2010,0.187,0.00133
2011,0.202,0.00133
2012,0.198,0.00133
2013,0.198,0.00131
2014,0.223,0.00131
2015,0.237,0.00131
2016,0.258,0.0013
2017,0.266,0.0013
2018,0.378,0.0012900000000000001