year,IPC1,IPC2,IPC4
1850,0.000374,0.0,4.2299999999999996e-07
1851,0.000393,0.0,4.45e-07
1852,0.000415,0.0,4.7e-07
1853,0.000437,0.0,4.95e-07
1854,0.000462,0.0,5.22e-07
1855,0.00048699999999999997,0.0,5.51e-07
1856,0.000513,0.0,5.81e-07
1857,0.000541,0.0,6.13e-07
1858,0.00057,0.0,6.45e-07
1859,0.0005989999999999999,0.0,6.79e-07
1860,0.00063,0.0,7.13e-07
1861,0.000662,0.0,7.489999999999999e-07
1862,0.000695,0.0,7.87e-07
1863,0.0007289999999999999,0.0,8.26e-07
1864,0.000766,0.0,8.67e-07
1865,0.000804,0.0,9.1e-07
1866,0.000843,0.0,9.55e-07
1867,0.000885,0.0,1e-06
1868,0.000928,0.0,1.05e-06
1869,0.000973,0.0,1.1e-06
1870,0.00102,0.0,1.15e-06
1871,0.00107,0.0,1.2099999999999998e-06
1872,0.0011200000000000001,0.0,1.2700000000000001e-06
1873,0.0011799999999999998,0.0,1.33e-06
1874,0.00124,0.0,1.4e-06
1875,0.0013,0.0,1.47e-06
1876,0.00136,0.0,1.5399999999999999e-06
1877,0.0014299999999999998,0.0,1.62e-06
1878,0.00149,0.0,1.6900000000000001e-06
1879,0.00156,0.0,1.77e-06
1880,0.00163,0.0,1.85e-06
1881,0.00171,0.0,1.93e-06
1882,0.0017800000000000001,0.0,2.0100000000000002e-06
1883,0.00185,0.0,2.1e-06
1884,0.0019299999999999999,0.0,2.19e-06
1885,0.0020099999999999996,0.0,2.2799999999999998e-06
1886,0.0021000000000000003,0.0,2.37e-06
1887,0.00218,0.0,2.47e-06
1888,0.00227,0.0,2.57e-06
1889,0.00237,0.0,2.68e-06
1890,0.00259,0.0,2.93e-06
1891,0.00269,0.0,3.04e-06
1892,0.00279,0.0,3.1600000000000002e-06
1893,0.0029100000000000003,0.0,3.29e-06
1894,0.0030299999999999997,0.0,3.4299999999999998e-06
1895,0.00315,0.0,3.5699999999999997e-06
1896,0.00329,0.0,3.7200000000000004e-06
1897,0.0034300000000000003,0.0,3.88e-06
1898,0.00357,0.0,4.04e-06
1899,0.00372,0.0,4.21e-06
1900,0.00387,0.0,4.38e-06
1901,0.00404,9.840000000000001e-08,4.57e-06
1902,0.00423,3.88e-07,4.79e-06
1903,0.00445,8.59e-07,5.03e-06
1904,0.00467,1.5e-06,5.28e-06
1905,0.004889999999999999,2.31e-06,5.5399999999999995e-06
1906,0.00512,3.28e-06,5.79e-06
1907,0.00533,4.3899999999999995e-06,6.03e-06
1908,0.00553,5.6299999999999995e-06,6.26e-06
1909,0.0057,7.01e-06,6.45e-06
1910,0.00584,8.51e-06,6.62e-06
1911,0.00597,1.12e-05,6.7600000000000005e-06
1912,0.00609,1.6e-05,6.89e-06
1913,0.00621,2.2599999999999997e-05,7.03e-06
1914,0.00631,3.08e-05,7.15e-06
1915,0.00642,4.02e-05,7.26e-06
1916,0.00651,5.07e-05,7.37e-06
1917,0.0065899999999999995,6.2e-05,7.46e-06
1918,0.00667,7.38e-05,7.5500000000000006e-06
1919,0.006730000000000001,8.58e-05,7.62e-06
1920,0.00677,9.779999999999999e-05,7.67e-06
1921,0.006809999999999999,0.00011,7.709999999999999e-06
1922,0.00684,0.000124,7.74e-06
1923,0.006860000000000001,0.00013900000000000002,7.77e-06
1924,0.00688,0.000155,7.79e-06
1925,0.006900000000000001,0.00017199999999999998,7.81e-06
1926,0.00692,0.000191,7.83e-06
1927,0.00694,0.00020999999999999998,7.85e-06
1928,0.00696,0.000231,7.879999999999999e-06
1929,0.0069900000000000006,0.000253,7.92e-06
1930,0.00704,0.000277,7.96e-06
1931,0.0070999999999999995,0.000306,8.040000000000001e-06
1932,0.00721,0.00034399999999999996,8.16e-06
1933,0.00735,0.000389,8.33e-06
1934,0.00753,0.000437,8.52e-06
1935,0.007730000000000001,0.00048499999999999997,8.750000000000001e-06
1936,0.00795,0.000531,8.999999999999999e-06
1937,0.00819,0.0005719999999999999,9.28e-06
1938,0.00845,0.000605,9.56e-06
1939,0.00871,0.000626,9.86e-06
1940,0.00897,0.000634,1.02e-05
1941,0.00923,0.000632,1.0500000000000001e-05
1942,0.00949,0.000625,1.07e-05
1943,0.00977,0.000616,1.11e-05
1944,0.0101,0.000605,1.1400000000000001e-05
1945,0.0104,0.000592,1.18e-05
1946,0.0108,0.00058,1.22e-05
1947,0.011300000000000001,0.000569,1.2699999999999999e-05
1948,0.011800000000000001,0.000559,1.33e-05
1949,0.0124,0.000553,1.41e-05
1950,0.013099999999999999,0.0005510000000000001,1.49e-05
1951,0.0152,0.000875,1.72e-05
1952,0.0195,0.00176,2.2e-05
1953,0.0255,0.0030499999999999998,2.88e-05
1954,0.0183,0.00463,2.0799999999999997e-05
1955,0.0183,0.00634,2.0799999999999997e-05
1956,0.0257,0.008060000000000001,2.91e-05
1957,0.0293,0.009630000000000001,3.32e-05
1958,0.0293,0.0109,3.32e-05
1959,0.040299999999999996,0.011800000000000001,4.57e-05
1960,0.0513,0.0121,5.8099999999999996e-05
1961,0.0697,0.0121,7.89e-05
1962,0.099,0.012,0.000112
1963,0.106,0.0119,0.00011999999999999999
1964,0.128,0.011699999999999999,0.000145
1965,0.132,0.0116,0.000149
1966,0.15,0.0114,0.00017
1967,0.165,0.011300000000000001,0.000187
1968,0.169,0.0112,0.000191
1969,0.169,0.0111,0.000191
1970,0.209,0.0125,0.000212
1971,0.224,0.0125,0.000217
1972,0.231,0.0126,0.000222
1973,0.22,0.0127,0.00022700000000000002
1974,0.264,0.0127,0.00022700000000000002
1975,0.297,0.0129,0.00022600000000000002
1976,0.253,0.0123,0.000229
1977,0.312,0.012199999999999999,0.000231
1978,0.414,0.0129,0.00023400000000000002
1979,0.414,0.0128,0.00023799999999999998
1980,0.528,0.0129,0.000242
1981,0.539,0.0127,0.000247
1982,0.484,0.013,0.000254
1983,0.682,0.013300000000000001,0.00027
1984,0.605,0.013300000000000001,0.000287
1985,0.733,0.012199999999999999,0.000297
1986,0.876,0.0124,0.000313
1987,0.972,0.0125,0.00033800000000000003
1988,0.964,0.0128,0.000357
1989,1.03,0.0128,0.000373
1990,1.04,0.0128,0.00039400000000000004
1991,1.09,0.013800000000000002,0.00040699999999999997
1992,1.08,0.017,0.000432
1993,1.18,0.0148,0.000446
1994,1.27,0.0147,0.000458
1995,1.23,0.00789,0.00047
1996,1.41,0.00851,0.000474
1997,1.49,0.00733,0.00047799999999999996
1998,1.56,0.00658,0.000474
1999,1.52,0.0062699999999999995,0.000474
2000,1.63,0.00643,0.000488
2001,1.69,0.00609,0.000496
2002,1.52,0.005690000000000001,0.000516
2003,1.53,0.0058,0.000545
2004,1.72,0.006889999999999999,0.0006
2005,1.83,0.0065899999999999995,0.000617
2006,1.62,0.00708,0.000642
2007,1.54,0.00666,0.00067
2008,1.34,0.0061600000000000005,0.0006979999999999999
2009,2.08,0.00592,0.000723
2010,1.41,0.00535,0.000748
2011,1.45,0.00549,0.000772
2012,1.31,0.143,0.0007970000000000001
2013,1.18,0.177,0.0007970000000000001
2014,1.29,0.179,0.0007970000000000001
2015,1.37,0.181,0.0007970000000000001
2016,1.49,0.274,0.0008070000000000001
2017,1.54,0.301,0.0008169999999999999
2018,2.18,0.301,0.0008269999999999999