year,IPC1,IPC2,IPC4,IPCMAG
1850,0.00785,3.53e-06,0.0125,0.083
1851,0.00789,3.83e-06,0.0126,0.083
1852,0.00801,4.17e-06,0.0128,0.083
1853,0.00822,4.5500000000000005e-06,0.0129,0.083
1854,0.0085,4.97e-06,0.013099999999999999,0.083
1855,0.00885,5.43e-06,0.0132,0.0831
1856,0.00928,5.92e-06,0.0134,0.0831
1857,0.009789999999999998,6.46e-06,0.0135,0.0832
1858,0.0104,7.03e-06,0.013699999999999999,0.0832
1859,0.011,7.64e-06,0.013800000000000002,0.0833
1860,0.011699999999999999,8.279999999999999e-06,0.013900000000000001,0.0834
1861,0.0125,8.949999999999999e-06,0.0141,0.0835
1862,0.013300000000000001,9.66e-06,0.014199999999999999,0.0836
1863,0.014199999999999999,1.0399999999999999e-05,0.0143,0.0837
1864,0.0152,1.12e-05,0.0144,0.0838
1865,0.0162,1.2e-05,0.0145,0.0839
1866,0.0173,1.2800000000000001e-05,0.0147,0.084
1867,0.0184,1.3599999999999999e-05,0.0148,0.0842
1868,0.019600000000000003,1.45e-05,0.0149,0.0843
1869,0.0208,1.54e-05,0.015,0.0844
1870,0.0221,1.63e-05,0.0152,0.0846
1871,0.023399999999999997,1.73e-05,0.015300000000000001,0.0848
1872,0.0248,1.83e-05,0.0155,0.0849
1873,0.026199999999999998,1.93e-05,0.0157,0.0851
1874,0.027600000000000003,2.03e-05,0.0159,0.0853
1875,0.0291,2.13e-05,0.0161,0.0855
1876,0.030600000000000002,2.24e-05,0.016300000000000002,0.0857
1877,0.0322,2.34e-05,0.0165,0.0858
1878,0.0338,2.4500000000000003e-05,0.016800000000000002,0.0861
1879,0.0354,2.5600000000000002e-05,0.017,0.0863
1880,0.0371,2.6700000000000002e-05,0.0172,0.0865
1881,0.038799999999999994,2.79e-05,0.0174,0.0867
1882,0.0405,2.9e-05,0.0176,0.0869
1883,0.0422,3.01e-05,0.0178,0.0871
1884,0.044,3.13e-05,0.0181,0.0874
1885,0.045700000000000005,3.2500000000000004e-05,0.0183,0.0876
1886,0.0475,3.37e-05,0.0185,0.0879
1887,0.0494,3.49e-05,0.018699999999999998,0.0881
1888,0.0512,3.5999999999999994e-05,0.019,0.0884
1889,0.053,3.7199999999999996e-05,0.0192,0.0886
1890,0.0571,5.82e-05,0.0195,0.0943
1891,0.0591,6.22e-05,0.0195,0.0891
1892,0.0611,6.73e-05,0.019600000000000003,0.0841
1893,0.0632,7.31e-05,0.019600000000000003,0.07940000000000001
1894,0.0654,7.98e-05,0.0197,0.0751
1895,0.0677,8.72e-05,0.0197,0.0712
1896,0.0701,9.520000000000001e-05,0.0198,0.0679
1897,0.0725,0.000104,0.019899999999999998,0.06520000000000001
1898,0.075,0.00011300000000000001,0.02,0.0632
1899,0.07759999999999999,0.000122,0.0201,0.062
1900,0.08020000000000001,0.000132,0.0202,0.061700000000000005
1901,0.0833,0.00014299999999999998,0.020399999999999998,0.062
1902,0.0869,0.000158,0.0206,0.062299999999999994
1903,0.09090000000000001,0.000174,0.0209,0.0628
1904,0.095,0.000191,0.0213,0.0633
1905,0.0991,0.00020899999999999998,0.0217,0.064
1906,0.103,0.00022600000000000002,0.0221,0.0648
1907,0.106,0.000243,0.022600000000000002,0.06570000000000001
1908,0.109,0.000259,0.023100000000000002,0.06670000000000001
1909,0.111,0.000272,0.0237,0.0678
1910,0.112,0.00028199999999999997,0.024300000000000002,0.0691
1911,0.111,0.00029,0.0249,0.0722
1912,0.11,0.000297,0.0257,0.0787
1913,0.107,0.000303,0.026600000000000002,0.0882
1914,0.104,0.000308,0.027600000000000003,0.1
1915,0.101,0.000313,0.0286,0.114
1916,0.09820000000000001,0.00031800000000000003,0.0297,0.129
1917,0.0953,0.000323,0.0308,0.145
1918,0.093,0.00032900000000000003,0.0319,0.161
1919,0.09140000000000001,0.000335,0.0329,0.178
1920,0.091,0.000342,0.0339,0.193
1921,0.09140000000000001,0.00034899999999999997,0.0347,0.211
1922,0.09240000000000001,0.000357,0.0356,0.234
1923,0.094,0.000365,0.0364,0.259
1924,0.096,0.000374,0.0371,0.285
1925,0.0984,0.000384,0.037899999999999996,0.312
1926,0.101,0.00039400000000000004,0.038700000000000005,0.337
1927,0.104,0.000404,0.0395,0.358
1928,0.108,0.000416,0.0404,0.376
1929,0.111,0.000429,0.0414,0.388
1930,0.115,0.000442,0.0425,0.392
1931,0.12,0.000458,0.0436,0.387
1932,0.128,0.00047799999999999996,0.044899999999999995,0.373
1933,0.139,0.0005,0.046299999999999994,0.353
1934,0.151,0.000524,0.047799999999999995,0.328
1935,0.163,0.00055,0.0494,0.301
1936,0.175,0.0005759999999999999,0.051,0.274
1937,0.186,0.000603,0.052700000000000004,0.25
1938,0.196,0.000629,0.0545,0.229
1939,0.202,0.0006540000000000001,0.0562,0.216
1940,0.205,0.0006770000000000001,0.0579,0.211
1941,0.206,0.0006969999999999999,0.0597,0.216
1942,0.207,0.000716,0.0615,0.229
1943,0.208,0.000732,0.0633,0.248
1944,0.209,0.000749,0.06520000000000001,0.273
1945,0.21,0.0007650000000000001,0.06709999999999999,0.3
1946,0.212,0.0007830000000000001,0.0691,0.328
1947,0.213,0.0008020000000000001,0.0711,0.355
1948,0.215,0.000824,0.0733,0.38
1949,0.217,0.00085,0.0755,0.4
1950,0.219,0.000879,0.0778,0.414
1951,0.222,0.000919,0.0803,0.424
1952,0.229,0.000972,0.083,0.433
1953,0.238,0.0010400000000000001,0.0859,0.441
1954,0.248,0.00111,0.0888,0.448
1955,0.261,0.0011899999999999999,0.09190000000000001,0.455
1956,0.274,0.00128,0.095,0.461
1957,0.287,0.0013700000000000001,0.09820000000000001,0.467
1958,0.3,0.00146,0.101,0.473
1959,0.311,0.0015400000000000001,0.104,0.478
1960,0.322,0.0016200000000000001,0.107,0.483
1961,0.33,0.0017,0.11,0.533
1962,0.335,0.0017800000000000001,0.113,0.538
1963,0.34,0.00185,0.117,0.518
1964,0.344,0.0019299999999999999,0.12,0.521
1965,0.349,0.0020099999999999996,0.123,0.539
1966,0.355,0.00209,0.126,0.555
1967,0.363,0.00218,0.129,0.586
1968,0.375,0.00227,0.132,0.599
1969,0.391,0.00212,0.129,0.589
1970,0.421,0.00219,0.129,0.579
1971,0.423,0.0020800000000000003,0.137,0.607
1972,0.432,0.00218,0.139,0.628
1973,0.458,0.00218,0.139,0.653
1974,0.472,0.00206,0.143,0.662
1975,0.502,0.002,0.147,0.662
1976,0.53,0.0020299999999999997,0.148,0.675
1977,0.55,0.00214,0.149,0.702
1978,0.581,0.00218,0.151,0.699
1979,0.573,0.00234,0.151,0.727
1980,0.583,0.0020800000000000003,0.152,0.726
1981,0.603,0.0020299999999999997,0.15,0.738
1982,0.595,0.0019399999999999999,0.148,0.739
1983,0.618,0.00173,0.148,0.738
1984,0.602,0.0020099999999999996,0.148,0.794
1985,0.59,0.0020800000000000003,0.147,0.818
1986,0.587,0.00222,0.147,0.782
1987,0.586,0.00211,0.146,0.784
1988,0.585,0.0022299999999999998,0.145,0.772
1989,0.514,0.00214,0.141,0.752
1990,0.467,0.00147,0.131,0.731
1991,0.404,0.000972,0.126,0.656
1992,0.379,0.0006810000000000001,0.121,0.579
1993,0.348,0.000736,0.124,0.498
1994,0.327,0.00116,0.119,0.506
1995,0.308,0.00111,0.128,0.467
1996,0.316,0.00102,0.134,0.465
1997,0.291,0.00136,0.145,0.454
1998,0.269,0.000885,0.151,0.434
1999,0.258,0.000584,0.155,0.423
2000,0.259,0.00109,0.172,0.409
2001,0.249,0.00093,0.188,0.39
2002,0.255,0.00124,0.205,0.379
2003,0.257,0.00164,0.188,0.39
2004,0.253,0.0020299999999999997,0.198,0.394
2005,0.241,0.00155,0.2,0.394
2006,0.238,0.00171,0.209,0.402
2007,0.234,0.00158,0.216,0.408
2008,0.248,0.00152,0.222,0.404
2009,0.242,0.0014299999999999998,0.219,0.393
2010,0.232,0.00151,0.237,0.377
2011,0.23,0.0015300000000000001,0.245,0.326
2012,0.228,0.00151,0.256,0.325
2013,0.214,0.0015,0.257,0.326
2014,0.224,0.0015400000000000001,0.275,0.329
2015,0.22,0.0015400000000000001,0.281,0.334
2016,0.213,0.0011200000000000001,0.28,0.336
2017,0.217,0.000794,0.282,0.331
2018,0.214,0.00091,0.278,0.326