year,IPC1,IPC2,IPC4
1850,0.0,0.0,0.0
1851,0.0,0.0,0.0
1852,0.0,0.0,0.0
1853,0.0,0.0,0.0
1854,0.0,0.0,0.0
1855,0.0,0.0,0.0
1856,0.0,0.0,0.0
1857,0.0,0.0,0.0
1858,0.0,0.0,0.0
1859,0.0,0.0,0.0
1860,0.0,0.0,0.0
1861,0.0,0.0,0.0
1862,0.0,0.0,0.0
1863,0.0,0.0,0.0
1864,0.0,0.0,0.0
1865,0.0,0.0,0.0
1866,0.0,0.0,0.0
1867,0.0,0.0,0.0
1868,0.0,0.0,0.0
1869,0.0,0.0,0.0
1870,0.0,0.0,0.0
1871,0.0,0.0,0.0
1872,0.0,0.0,0.0
1873,0.0,0.0,0.0
1874,0.0,0.0,0.0
1875,0.0,0.0,0.0
1876,0.0,0.0,0.0
1877,0.0,0.0,0.0
1878,0.0,0.0,0.0
1879,0.0,0.0,0.0
1880,0.0,0.0,0.0
1881,0.0,0.0,0.0
1882,0.0,0.0,0.0
1883,0.0,0.0,0.0
1884,0.0,0.0,0.0
1885,0.0,0.0,0.0
1886,0.0,0.0,0.0
1887,0.0,0.0,0.0
1888,0.0,0.0,0.0
1889,0.0,0.0,0.0
1890,0.0,0.0,0.0
1891,0.0,0.0,0.0
1892,0.0,0.0,0.0
1893,0.0,0.0,0.0
1894,0.0,0.0,0.0
1895,0.0,0.0,0.0
1896,0.0,0.0,0.0
1897,0.0,0.0,0.0
1898,0.0,0.0,0.0
1899,0.0,0.0,0.0
1900,0.0,0.0,0.0
1901,0.0,1.14e-07,0.0
1902,0.0,4.47e-07,0.0
1903,0.0,9.91e-07,0.0
1904,0.0,1.73e-06,0.0
1905,0.0,2.6700000000000003e-06,0.0
1906,0.0,3.78e-06,0.0
1907,0.0,5.060000000000001e-06,0.0
1908,0.0,6.5e-06,0.0
1909,0.0,8.09e-06,0.0
1910,0.0,9.820000000000001e-06,0.0
1911,0.0,1.29e-05,0.0
1912,0.0,1.84e-05,0.0
1913,0.0,2.61e-05,0.0
1914,0.0,3.5499999999999996e-05,0.0
1915,0.0,4.6399999999999996e-05,0.0
1916,0.0,5.86e-05,0.0
1917,0.0,7.159999999999999e-05,0.0
1918,0.0,8.52e-05,0.0
1919,0.0,9.91e-05,0.0
1920,0.0,0.00011300000000000001,0.0
1921,1.12e-12,0.000127,0.0
1922,4.4e-12,0.00014299999999999998,0.0
1923,9.75e-12,0.00016,0.0
1924,1.71e-11,0.000179,0.0
1925,2.63e-11,0.000199,0.0
1926,3.7200000000000005e-11,0.00022,0.0
1927,4.99e-11,0.000243,0.0
1928,6.41e-11,0.00026700000000000004,0.0
1929,7.98e-11,0.000292,0.0
1930,9.69e-11,0.000319,0.0
1931,1.41e-10,0.00035299999999999996,0.0
1932,2.29e-10,0.000397,0.0
1933,3.5e-10,0.000449,0.0
1934,4.920000000000001e-10,0.000504,0.0
1935,6.439999999999999e-10,0.0005600000000000001,0.0
1936,7.95e-10,0.0006129999999999999,0.0
1937,9.32e-10,0.00066,0.0
1938,1.04e-09,0.0006979999999999999,0.0
1939,1.12e-09,0.000723,0.0
1940,1.15e-09,0.000732,0.0
1941,1.13e-09,0.0007289999999999999,0.0
1942,1.0699999999999998e-09,0.000722,0.0
1943,9.86e-10,0.0007109999999999999,0.0
1944,8.84e-10,0.0006979999999999999,0.0
1945,7.73e-10,0.000684,0.0
1946,6.62e-10,0.000669,0.0
1947,5.6e-10,0.000656,0.0
1948,4.76e-10,0.000646,0.0
1949,4.19e-10,0.000638,0.0
1950,0.0348,0.0006360000000000001,6.86e-05
1951,0.0528,0.00101,0.000104
1952,0.0712,0.0020299999999999997,0.00014099999999999998
1953,0.09309999999999999,0.00352,0.000184
1954,0.109,0.00534,0.000215
1955,0.103,0.00732,0.000203
1956,0.132,0.009300000000000001,0.00026000000000000003
1957,0.161,0.0111,0.00031800000000000003
1958,0.198,0.0126,0.000391
1959,0.213,0.0136,0.00041999999999999996
1960,0.235,0.014,0.00046300000000000003
1961,0.286,0.014,0.0005639999999999999
1962,0.308,0.013900000000000001,0.000608
1963,0.389,0.0298,0.000767
1964,0.341,0.0172,0.0006730000000000001
1965,0.378,0.038799999999999994,0.000745
1966,0.44,0.0423,0.000868
1967,0.389,0.0421,0.000767
1968,0.462,0.0419,0.000911
1969,1.31,0.0418,0.00259
1970,1.16,0.032600000000000004,0.00155
1971,0.22,0.0436,0.00156
1972,0.0917,0.0402,0.00155
1973,0.088,0.0549,0.0015300000000000001
1974,0.047700000000000006,0.040299999999999996,0.00149
1975,0.047700000000000006,0.040299999999999996,0.00147
1976,0.047700000000000006,0.0395,0.00151
1977,0.047700000000000006,0.038799999999999994,0.00157
1978,0.047700000000000006,0.0176,0.00165
1979,0.0293,0.0198,0.00173
1980,0.286,0.0223,0.0018
1981,0.301,0.0248,0.0018700000000000001
1982,0.337,0.0282,0.0019299999999999999
1983,0.367,0.031,0.0020099999999999996
1984,0.411,0.0342,0.0021000000000000003
1985,0.418,0.0368,0.00218
1986,0.433,0.039799999999999995,0.00226
1987,0.436,0.0428,0.00234
1988,0.451,0.046,0.00242
1989,0.451,0.049,0.00252
1990,1.26,0.052,0.00262
1991,1.31,0.055200000000000006,0.00272
1992,1.35,0.0583,0.00285
1993,1.39,0.061399999999999996,0.00298
1994,1.43,0.06420000000000001,0.00323
1995,1.5,0.0684,0.00347
1996,1.52,0.108,0.0037099999999999998
1997,1.47,0.088,0.0039900000000000005
1998,1.88,0.0866,0.0042699999999999995
1999,1.9,0.0867,0.004690000000000001
2000,1.98,0.0862,0.00507
2001,2.25,0.07970000000000001,0.00546
2002,2.21,0.07859999999999999,0.00583
2003,2.38,0.07809999999999999,0.00628
2004,2.45,0.07640000000000001,0.0067800000000000004
2005,2.78,0.0747,0.00741
2006,3.0,0.0731,0.00775
2007,3.42,0.0702,0.00821
2008,3.51,0.334,0.00867
2009,4.19,0.394,0.00914
2010,4.63,0.338,0.009609999999999999
2011,4.76,0.38,0.0101
2012,4.97,0.408,0.0106
2013,5.08,0.445,0.0106
2014,5.99,0.572,0.0106
2015,6.38,0.638,0.0106
2016,6.95,0.682,0.0107
2017,7.15,0.688,0.0109
2018,10.2,0.696,0.0111