year,IPC1,IPC2,IPC4,IPCMAG
1850,0.0,0.0,0.0,0.0
1851,0.0,0.0,0.0,0.0
1852,0.0,0.0,0.0,0.0
1853,0.0,0.0,0.0,0.0
1854,0.0,0.0,0.0,0.0
1855,0.0,0.0,0.0,0.0
1856,0.0,0.0,0.0,0.0
1857,0.0,0.0,0.0,0.0
1858,0.0,0.0,0.0,0.0
1859,0.0,0.0,0.0,0.0
1860,0.0,0.0,0.0,0.0
1861,0.0,0.0,0.0,0.0
1862,0.0,0.0,0.0,0.0
1863,0.0,0.0,0.0,0.0
1864,0.0,0.0,0.0,0.0
1865,0.0,0.0,0.0,0.0
1866,0.0,0.0,0.0,0.0
1867,0.0,0.0,0.0,0.0
1868,0.0,0.0,0.0,0.0
1869,0.0,0.0,0.0,0.0
1870,0.0,0.0,0.0,0.0
1871,0.0,0.0,0.0,0.0
1872,0.0,0.0,0.0,0.0
1873,0.0,0.0,0.0,0.0
1874,0.0,0.0,0.0,0.0
1875,0.0,0.0,0.0,0.0
1876,0.0,0.0,0.0,0.0
1877,0.0,0.0,0.0,0.0
1878,0.0,0.0,0.0,0.0
1879,0.0,0.0,0.0,0.0
1880,0.0,0.0,0.0,0.0
1881,0.00031800000000000003,0.00884,1.47e-07,1.21e-07
1882,0.000751,0.0209,3.46e-07,2.8499999999999997e-07
1883,0.00128,0.0356,5.900000000000001e-07,4.86e-07
1884,0.00188,0.0523,8.67e-07,7.14e-07
1885,0.00254,0.0705,1.17e-06,9.64e-07
1886,0.00331,0.09209999999999999,1.53e-06,1.26e-06
1887,0.00425,0.118,1.96e-06,1.62e-06
1888,0.00532,0.148,2.45e-06,2.02e-06
1889,0.00645,0.179,2.98e-06,2.45e-06
1890,0.0076100000000000004,0.135,3.5100000000000003e-06,2.8900000000000003e-06
1891,0.00888,0.135,4.1000000000000006e-06,3.3700000000000003e-06
1892,0.00983,0.135,4.53e-06,3.73e-06
1893,0.0174,0.135,8.040000000000001e-06,6.629999999999999e-06
1894,0.033299999999999996,0.135,1.54e-05,1.26e-05
1895,0.033299999999999996,0.135,1.54e-05,1.26e-05
1896,0.0371,0.135,1.7100000000000002e-05,1.41e-05
1897,0.0288,0.136,1.33e-05,1.1e-05
1898,0.0438,0.136,2.02e-05,1.66e-05
1899,0.051,0.136,2.35e-05,1.94e-05
1900,0.0691,0.136,3.1899999999999996e-05,2.63e-05
1901,0.0755,0.136,3.48e-05,2.87e-05
1902,0.0707,0.137,3.26e-05,2.69e-05
1903,0.0767,0.137,3.54e-05,2.92e-05
1904,0.0818,0.137,3.7699999999999995e-05,3.11e-05
1905,0.0888,0.137,4.1e-05,3.37e-05
1906,0.106,0.138,4.9000000000000005e-05,4.04e-05
1907,0.108,0.138,4.99e-05,4.1099999999999996e-05
1908,0.116,0.138,5.37e-05,4.4200000000000004e-05
1909,0.12,0.139,5.5100000000000004e-05,4.5400000000000006e-05
1910,0.118,0.139,5.4600000000000006e-05,4.49e-05
1911,0.128,0.14,5.91e-05,4.87e-05
1912,0.131,0.14,6.06e-05,4.99e-05
1913,0.36,0.141,0.000166,0.00013700000000000002
1914,0.353,0.141,0.000163,0.000134
1915,0.334,0.142,0.000154,0.000127
1916,0.309,0.142,0.00014299999999999998,0.000118
1917,0.285,0.143,0.000131,0.000108
1918,0.266,0.143,0.000123,0.000101
1919,0.258,0.144,0.00011899999999999999,9.82e-05
1920,0.343,0.145,0.000158,0.00013000000000000002
1921,0.365,0.146,0.00016900000000000002,0.00013900000000000002
1922,0.526,0.146,0.000243,0.0002
1923,0.574,0.147,0.000265,0.00021799999999999999
1924,0.589,0.148,0.000272,0.000224
1925,0.645,0.149,0.000298,0.000245
1926,0.628,0.15,0.00029,0.00023799999999999998
1927,0.708,0.152,0.00032700000000000003,0.00026900000000000003
1928,0.77,0.179,0.00035499999999999996,0.00029299999999999997
1929,0.878,0.182,0.00040500000000000003,0.00033400000000000004
1930,0.822,0.184,0.000379,0.000312
1931,0.726,0.186,0.000335,0.00027600000000000004
1932,0.665,0.18,0.000307,0.000253
1933,0.614,0.182,0.000283,0.00023300000000000003
1934,0.641,0.184,0.000296,0.000244
1935,0.668,0.19,0.000308,0.000254
1936,0.662,0.187,0.000305,0.000251
1937,0.744,0.189,0.00034300000000000004,0.000283
1938,0.708,0.195,0.00032700000000000003,0.00026900000000000003
1939,0.746,0.196,0.00034399999999999996,0.000283
1940,0.891,0.201,0.00041099999999999996,0.000339
1941,0.66,0.206,0.000305,0.000251
1942,0.231,0.214,0.000107,8.790000000000001e-05
1943,0.000241,0.224,1.11e-07,9.14e-08
1944,0.00601,0.225,2.7699999999999997e-06,2.2799999999999998e-06
1945,0.443,0.227,0.000204,0.00016800000000000002
1946,0.863,0.257,0.000398,0.000328
1947,1.18,0.295,0.000545,0.000449
1948,1.34,0.311,0.000619,0.00051
1949,1.53,0.334,0.000708,0.000583
1950,1.44,0.353,0.000665,0.0005480000000000001
1951,1.36,0.379,0.00063,0.000519
1952,1.37,0.423,0.000633,0.000521
1953,1.34,0.469,0.00062,0.0005110000000000001
1954,1.61,0.529,0.000745,0.0006129999999999999
1955,1.85,0.596,0.000855,0.000704
1956,2.13,0.661,0.000983,0.000809
1957,2.3,0.744,0.00106,0.0008719999999999999
1958,2.26,0.813,0.0010400000000000001,0.000857
1959,2.59,0.89,0.0011899999999999999,0.000983
1960,2.82,0.962,0.0013,0.00107
1961,2.96,1.02,0.0013700000000000001,0.0011200000000000001
1962,3.03,1.1,0.0014,0.00115
1963,3.35,1.17,0.00155,0.00127
1964,3.79,1.25,0.00175,0.0014399999999999999
1965,3.85,1.32,0.00177,0.00146
1966,3.77,1.4,0.00174,0.0014299999999999998
1967,3.73,1.48,0.00172,0.0014199999999999998
1968,3.93,1.57,0.00181,0.00149
1969,4.02,1.66,0.00186,0.0015300000000000001
1970,5.27,1.47,0.00214,0.00198
1971,5.69,1.34,0.00218,0.00198
1972,5.25,1.38,0.00228,0.00198
1973,6.13,1.66,0.00237,0.00198
1974,6.14,1.69,0.00246,0.002
1975,6.44,1.15,0.00256,0.00209
1976,6.6,1.25,0.00268,0.0022
1977,6.33,1.26,0.0028,0.00226
1978,7.0,1.14,0.0029100000000000003,0.0023599999999999997
1979,7.56,1.38,0.0030499999999999998,0.00273
1980,7.3,1.19,0.00317,0.00257
1981,8.23,1.13,0.00329,0.00264
1982,7.37,0.795,0.0034,0.00275
1983,8.06,0.591,0.00349,0.00226
1984,8.51,0.761,0.0036,0.00439
1985,8.71,0.779,0.00369,0.004690000000000001
1986,9.07,0.76,0.00378,0.0034100000000000003
1987,8.89,0.832,0.0038900000000000002,0.0037400000000000003
1988,9.2,0.901,0.00398,0.00275
1989,9.16,0.943,0.004059999999999999,0.00463
1990,9.2,0.884,0.00415,0.0037400000000000003
1991,8.5,0.905,0.00418,0.00265
1992,7.84,0.986,0.00421,0.00635
1993,8.38,0.855,0.00424,0.00564
1994,8.18,0.75,0.0042699999999999995,0.0159
1995,8.27,0.842,0.0043,0.016
1996,7.96,0.871,0.00433,0.0207
1997,8.61,0.984,0.00437,0.0193
1998,9.32,0.994,0.0044,0.0115
1999,9.11,0.813,0.00443,0.0107
2000,8.64,0.934,0.0044599999999999996,0.009699999999999999
2001,8.79,0.91,0.00449,0.00522
2002,9.2,0.842,0.00452,0.007690000000000001
2003,8.6,0.737,0.00455,0.004900000000000001
2004,8.3,0.797,0.00528,0.0048200000000000005
2005,9.04,0.833,0.006,0.004730000000000001
2006,8.15,0.795,0.006719999999999999,0.0046500000000000005
2007,8.65,0.798,0.00726,0.00456
2008,8.73,0.778,0.00818,0.0044800000000000005
2009,8.84,0.761,0.00887,0.00211
2010,8.95,0.743,0.009550000000000001,0.00487
2011,9.05,0.727,0.010199999999999999,2.75e-05
2012,9.16,0.71,0.0109,0.00575
2013,8.16,0.792,0.0112,0.00575
2014,7.7,0.776,0.009519999999999999,0.00575
2015,7.4,0.691,0.009550000000000001,0.0055
2016,7.23,0.728,0.00957,0.005
2017,7.72,0.768,0.00959,0.005
2018,7.23,0.75,0.0096,0.005