year,IPC1,IPC2,IPC4,IPCMAG
1850,0.0268,0.0,1.98e-06,0.000129
1851,0.0325,0.0,2.4e-06,0.000156
1852,0.0427,0.0,3.1600000000000002e-06,0.000205
1853,0.0555,0.0,4.11e-06,0.00026700000000000004
1854,0.069,0.0,5.11e-06,0.000331
1855,0.0813,0.0,6.01e-06,0.00039
1856,0.0928,0.0,6.87e-06,0.00044500000000000003
1857,0.104,0.0,7.72e-06,0.000501
1858,0.114,0.0,8.439999999999999e-06,0.0005480000000000001
1859,0.121,0.0,8.949999999999999e-06,0.0005809999999999999
1860,0.158,0.0,1.17e-05,0.00076
1861,0.203,0.0,1.4999999999999999e-05,0.000972
1862,0.182,0.0,1.35e-05,0.0008719999999999999
1863,0.189,0.0,1.4e-05,0.000909
1864,0.212,0.0,1.57e-05,0.00102
1865,0.202,0.0,1.49e-05,0.000968
1866,0.646,0.0,4.78e-05,0.0031
1867,0.739,0.0,5.47e-05,0.0035499999999999998
1868,0.609,0.0,4.51e-05,0.00292
1869,0.831,0.0,6.15e-05,0.0039900000000000005
1870,0.902,0.0,6.68e-05,0.00433
1871,1.22,0.0,9.06e-05,0.00587
1872,1.26,0.0,9.29e-05,0.006030000000000001
1873,1.17,0.0,8.62e-05,0.0055899999999999995
1874,1.41,0.0,0.000104,0.00675
1875,1.6,0.0,0.00011899999999999999,0.007690000000000001
1876,1.97,0.0,0.000146,0.009439999999999999
1877,1.97,0.0,0.000146,0.009439999999999999
1878,2.59,0.0,0.000191,0.0124
1879,2.62,0.0,0.000194,0.0126
1880,3.08,0.0,0.000228,0.0148
1881,3.17,0.0,0.000235,0.0152
1882,3.33,0.0,0.000246,0.016
1883,3.8,0.0,0.00028100000000000005,0.0182
1884,3.69,0.0,0.000273,0.0177
1885,3.92,0.0,0.00029,0.0188
1886,4.01,0.0,0.000297,0.0193
1887,4.09,0.0,0.000303,0.0197
1888,4.23,0.0,0.000313,0.020300000000000002
1889,4.65,0.0,0.00034399999999999996,0.0223
1890,5.18,0.0,0.000383,0.0249
1891,5.55,0.0,0.00041099999999999996,0.026699999999999998
1892,5.91,0.0,0.000437,0.028399999999999998
1893,6.91,0.0,0.0005110000000000001,0.0332
1894,7.23,0.0,0.000535,0.0347
1895,7.94,0.0,0.000587,0.0381
1896,8.14,0.0,0.000602,0.039
1897,9.45,0.0,0.000699,0.0453
1898,10.6,0.0,0.000782,0.0507
1899,12.5,0.0,0.0009270000000000001,0.0601
1900,14.1,0.0,0.0010400000000000001,0.0676
1901,14.1,0.0,0.0010400000000000001,0.0677
1902,13.7,0.0,0.00101,0.0658
1903,13.7,0.0,0.00101,0.0658
1904,15.5,0.0,0.00115,0.07440000000000001
1905,14.4,0.0,0.00107,0.0692
1906,16.4,0.0,0.00122,0.079
1907,18.6,0.0,0.00138,0.08940000000000001
1908,18.7,0.0,0.00139,0.09
1909,19.7,0.0,0.00146,0.0948
1910,19.2,0.0,0.0014199999999999998,0.09209999999999999
1911,20.2,0.021,0.0015,0.097
1912,23.3,0.08059999999999999,0.00172,0.112
1913,25.7,0.174,0.0019,0.123
1914,22.7,0.297,0.0016799999999999999,0.109
1915,20.2,0.443,0.0015,0.0973
1916,21.5,0.609,0.0016,0.104
1917,20.0,0.789,0.00148,0.096
1918,7.88,0.979,0.000584,0.037899999999999996
1919,6.21,1.17,0.00046,0.0298
1920,5.72,1.37,0.000424,0.0275
1921,6.38,1.58,0.000472,0.030600000000000002
1922,7.77,1.81,0.000575,0.0373
1923,8.55,2.08,0.000633,0.041100000000000005
1924,10.5,2.38,0.000778,0.0505
1925,10.2,2.7,0.000755,0.0489
1926,15.4,3.04,0.00114,0.07390000000000001
1927,19.2,3.74,0.0014199999999999998,0.09240000000000001
1928,21.6,4.1,0.0016,0.104
1929,22.7,4.58,0.0016799999999999999,0.109
1930,28.9,5.12,0.00214,0.139
1931,34.7,5.62,0.00257,0.167
1932,40.8,6.16,0.00302,0.196
1933,46.6,6.62,0.0034500000000000004,0.224
1934,57.0,7.37,0.00422,0.274
1935,65.2,8.18,0.00483,0.314
1936,75.3,9.09,0.00558,0.362
1937,76.8,9.75,0.005690000000000001,0.369
1938,81.0,10.5,0.006,0.389
1939,82.1,11.3,0.00608,0.394
1940,101.0,12.0,0.00745,0.483
1941,86.7,12.7,0.00643,0.417
1942,56.6,13.3,0.004200000000000001,0.272
1943,77.2,13.8,0.005719999999999999,0.371
1944,67.5,14.3,0.005,0.325
1945,79.0,14.9,0.005849999999999999,0.38
1946,88.4,15.9,0.006549999999999999,0.425
1947,106.0,17.1,0.00788,0.511
1948,112.0,18.4,0.00833,0.54
1949,127.0,19.9,0.009439999999999999,0.612
1950,142.0,21.7,0.0105,0.681
1951,153.0,24.5,0.0114,0.738
1952,163.0,28.9,0.0121,0.785
1953,172.0,34.7,0.0127,0.826
1954,187.0,41.8,0.013900000000000001,0.899
1955,211.0,49.8,0.0156,1.01
1956,229.0,58.3,0.017,1.1
1957,249.0,67.5,0.0184,1.19
1958,262.0,76.9,0.019399999999999997,1.26
1959,272.0,86.4,0.0201,1.31
1960,279.0,95.7,0.0206,1.34
1961,282.0,105.0,0.0209,1.36
1962,290.0,115.0,0.0215,1.39
1963,308.0,125.0,0.0228,1.48
1964,324.0,135.0,0.024,1.56
1965,341.0,146.0,0.0253,1.64
1966,358.0,158.0,0.0265,1.72
1967,369.0,169.0,0.0273,1.77
1968,374.0,180.0,0.0277,1.8
1969,387.0,190.0,0.0286,1.86
1970,407.0,171.0,0.0287,1.84
1971,424.0,163.0,0.0287,1.92
1972,443.0,175.0,0.0287,1.99
1973,457.0,183.0,0.0287,2.07
1974,468.0,169.0,0.0287,2.14
1975,489.0,166.0,0.0287,2.2
1976,507.0,168.0,0.0287,2.21
1977,522.0,160.0,0.0287,2.2
1978,534.0,155.0,0.0287,2.24
1979,541.0,151.0,0.0287,2.24
1980,565.0,143.0,0.0287,2.27
1981,542.0,138.0,0.0287,2.34
1982,553.0,114.0,0.0287,2.47
1983,559.0,108.0,0.0287,2.51
1984,564.0,123.0,0.0287,2.54
1985,620.0,120.0,0.0287,2.59
1986,626.0,117.0,0.0287,2.72
1987,649.0,117.0,0.0287,2.72
1988,663.0,118.0,0.0287,2.68
1989,644.0,116.0,0.0287,2.66
1990,592.0,111.0,0.0287,2.86
1991,536.0,94.7,0.0288,1.58
1992,496.0,91.7,0.0287,1.54
1993,434.0,74.6,0.0285,1.5
1994,355.0,63.2,0.0273,1.47
1995,333.0,54.9,0.026699999999999998,1.44
1996,298.0,52.8,0.0261,0.354
1997,282.0,58.1,0.027899999999999998,0.137
1998,272.0,56.7,0.0299,0.138
1999,239.0,59.2,0.032100000000000004,0.119
2000,222.0,63.3,0.0345,0.146
2001,236.0,67.0,0.037,0.188
2002,227.0,68.5,0.039700000000000006,0.171
2003,236.0,71.2,0.0419,0.24
2004,236.0,74.1,0.0445,0.119
2005,240.0,73.3,0.0495,0.229
2006,255.0,77.6,0.0497,0.277
2007,253.0,83.5,0.0498,0.324
2008,243.0,81.8,0.0499,0.48
2009,212.0,64.8,0.0515,0.327
2010,224.0,69.6,0.052899999999999996,0.462
2011,234.0,73.7,0.0451,0.519
2012,233.0,70.8,0.0347,0.502
2013,229.0,68.0,0.00331,0.564
2014,199.0,58.1,0.0111,0.542
2015,170.0,53.4,0.00835,0.542
2016,179.0,54.6,0.00466,0.59
2017,175.0,47.6,0.0059299999999999995,0.681
2018,181.0,50.6,0.00519,0.365