year,IPC1,IPC2,IPC4,IPCMAG
1850,0.115,0.0,0.000683,6.68e-05
1851,0.121,0.0,0.000719,7.03e-05
1852,0.128,0.0,0.000758,7.41e-05
1853,0.135,0.0,0.000799,7.82e-05
1854,0.142,0.0,0.000843,8.25e-05
1855,0.15,0.0,0.0008900000000000001,8.7e-05
1856,0.158,0.0,0.0009379999999999999,9.17e-05
1857,0.167,0.0,0.000989,9.669999999999999e-05
1858,0.175,0.0,0.0010400000000000001,0.000102
1859,0.185,0.0,0.0011,0.000107
1860,0.194,0.0,0.00115,0.00011300000000000001
1861,0.204,0.0,0.00121,0.000118
1862,0.214,0.0,0.00127,0.000124
1863,0.225,0.0,0.00133,0.00013000000000000002
1864,0.236,0.0,0.0014,0.00013700000000000002
1865,0.248,0.0,0.00147,0.00014399999999999998
1866,0.26,0.0,0.0015400000000000001,0.00015099999999999998
1867,0.273,0.0,0.0016200000000000001,0.000158
1868,0.286,0.0,0.0017,0.000166
1869,0.3,0.0,0.0017800000000000001,0.000174
1870,0.314,0.0,0.00186,0.000182
1871,0.329,0.0,0.00195,0.000191
1872,0.346,0.0,0.0020499999999999997,0.0002
1873,0.363,0.0,0.00215,0.00020999999999999998
1874,0.381,0.0,0.00226,0.000221
1875,0.4,0.0,0.00237,0.000232
1876,0.419,0.0,0.00249,0.000243
1877,0.44,0.0,0.00261,0.000255
1878,0.46,0.0,0.00273,0.00026700000000000004
1879,0.482,0.0,0.0028599999999999997,0.000279
1880,0.503,0.0,0.00299,0.000292
1881,0.525,0.0,0.00312,0.000305
1882,0.548,0.0,0.00325,0.00031800000000000003
1883,0.571,0.0,0.0033900000000000002,0.000331
1884,0.595,0.0,0.0035299999999999997,0.000345
1885,0.62,0.0,0.00368,0.00035999999999999997
1886,0.646,0.0,0.00383,0.000375
1887,0.672,0.0,0.0039900000000000005,0.00039
1888,0.7,0.0,0.00415,0.000406
1889,0.729,0.0,0.00433,0.000423
1890,0.801,0.0,0.00475,0.000465
1891,0.831,0.0,0.0049299999999999995,0.000482
1892,0.863,0.0,0.00512,0.000501
1893,0.898,0.0,0.00533,0.000521
1894,0.936,0.0,0.00555,0.0005430000000000001
1895,0.975,0.0,0.00579,0.000566
1896,1.02,0.0,0.006030000000000001,0.0005899999999999999
1897,1.06,0.0,0.0062900000000000005,0.000615
1898,1.11,0.0,0.00656,0.000642
1899,1.15,0.0,0.00684,0.000669
1900,1.2,0.0,0.00713,0.0006969999999999999
1901,1.25,0.0,0.00744,0.000728
1902,1.32,0.0,0.007809999999999999,0.000763
1903,1.38,0.0,0.008199999999999999,0.0008020000000000001
1904,1.45,0.0,0.00862,0.000843
1905,1.53,0.0,0.00905,0.000885
1906,1.6,0.0,0.009470000000000001,0.0009260000000000001
1907,1.67,0.0,0.009880000000000002,0.000966
1908,1.73,0.0,0.0103,0.001
1909,1.79,0.0,0.0106,0.0010400000000000001
1910,1.83,0.0,0.0109,0.00106
1911,1.88,0.0,0.0111,0.00109
1912,1.91,0.0,0.0114,0.00111
1913,1.95,0.0,0.0116,0.00113
1914,1.98,0.0,0.011800000000000001,0.00115
1915,2.01,0.0,0.0119,0.00117
1916,2.04,0.0,0.0121,0.0011899999999999999
1917,2.07,0.0,0.0123,0.0012
1918,2.1,0.0,0.0125,0.00122
1919,2.13,0.0,0.0127,0.00124
1920,2.16,0.0,0.0128,0.00126
1921,2.19,5.99e-05,0.013,0.00127
1922,2.22,0.00023,0.0132,0.0012900000000000001
1923,2.25,0.000495,0.0134,0.00131
1924,2.28,0.000841,0.0135,0.00132
1925,2.3,0.00125,0.013699999999999999,0.00134
1926,2.33,0.00171,0.013800000000000002,0.00135
1927,2.41,0.00221,0.0143,0.0014
1928,2.45,0.00273,0.0145,0.0014199999999999998
1929,2.36,0.00326,0.014,0.0013700000000000001
1930,2.39,0.00378,0.014199999999999999,0.00139
1931,2.28,0.00434,0.0135,0.00132
1932,2.31,0.005,0.013699999999999999,0.00134
1933,2.32,0.005730000000000001,0.013800000000000002,0.00135
1934,2.37,0.00653,0.0141,0.00138
1935,2.35,0.00736,0.013900000000000001,0.00136
1936,2.41,0.008230000000000001,0.0143,0.0014
1937,2.49,0.00911,0.0148,0.00145
1938,2.39,0.009980000000000001,0.014199999999999999,0.00139
1939,2.51,0.0108,0.0149,0.00145
1940,2.46,0.0116,0.0146,0.0014299999999999998
1941,2.47,0.0124,0.0146,0.0014299999999999998
1942,0.795,0.013099999999999999,0.004719999999999999,0.00046100000000000004
1943,0.318,0.013699999999999999,0.00189,0.000185
1944,0.239,0.0143,0.0014199999999999998,0.00013800000000000002
1945,0.23,0.015,0.0013700000000000001,0.000133
1946,0.0057,0.0157,3.37e-05,3.3e-06
1947,0.019899999999999998,0.0165,0.000118,1.15e-05
1948,0.119,0.0174,0.000708,6.92e-05
1949,0.07959999999999999,0.0184,0.000472,4.61e-05
1950,0.622,0.0357,0.00369,0.000361
1951,0.707,0.0286,0.004200000000000001,0.00041
1952,0.861,0.0455,0.00511,0.000499
1953,0.994,0.048600000000000004,0.005900000000000001,0.0005769999999999999
1954,1.11,0.0594,0.0065899999999999995,0.000644
1955,1.08,0.0632,0.00641,0.000626
1956,1.27,0.0564,0.00753,0.000737
1957,1.61,0.0606,0.00957,0.0009360000000000001
1958,1.86,0.06470000000000001,0.011,0.00108
1959,2.14,0.0686,0.0127,0.00124
1960,2.09,0.07590000000000001,0.0124,0.00121
1961,1.99,0.0756,0.011800000000000001,0.00116
1962,2.21,0.086,0.013099999999999999,0.00128
1963,1.99,0.125,0.011800000000000001,0.00116
1964,2.16,0.132,0.0128,0.00126
1965,2.06,0.135,0.012199999999999999,0.0012
1966,2.12,0.142,0.0126,0.00123
1967,2.75,0.142,0.016300000000000002,0.0016
1968,2.2,0.167,0.013099999999999999,0.00128
1969,2.42,0.175,0.0144,0.0014
1970,3.59,0.172,0.0158,0.0109
1971,3.95,0.188,0.0158,0.019899999999999998
1972,3.81,0.19,0.016399999999999998,0.0233
1973,3.21,0.189,0.017,0.0268
1974,3.65,0.179,0.0174,0.027899999999999998
1975,3.55,0.188,0.0179,0.0312
1976,3.76,0.214,0.0183,0.0315
1977,4.0,0.234,0.018699999999999998,0.0366
1978,3.98,0.227,0.0192,0.0498
1979,3.9,0.29,0.019600000000000003,0.053
1980,4.24,0.29,0.0201,0.049
1981,4.27,0.257,0.0206,0.0679
1982,4.22,0.275,0.0211,0.0841
1983,4.37,0.273,0.0216,0.0843
1984,4.99,0.26,0.0222,0.09340000000000001
1985,5.03,0.335,0.0228,0.0983
1986,5.12,0.315,0.023399999999999997,0.0843
1987,3.73,0.296,0.024,0.0675
1988,3.06,0.281,0.0246,0.049
1989,3.31,0.384,0.0252,0.047
1990,3.16,0.39,0.0258,0.0424
1991,3.07,0.318,0.0263,0.0438
1992,3.61,0.325,0.0268,0.0399
1993,3.99,0.301,0.0273,0.044
1994,4.66,0.423,0.027899999999999998,0.08109999999999999
1995,5.2,0.445,0.028399999999999998,0.07959999999999999
1996,5.43,0.445,0.0289,0.0865
1997,5.61,0.451,0.0295,0.09559999999999999
1998,6.12,0.393,0.030100000000000002,0.0973
1999,6.82,0.384,0.030699999999999998,0.08979999999999999
2000,7.67,0.408,0.032600000000000004,0.119
2001,7.31,0.371,0.0332,0.054299999999999994
2002,7.58,0.378,0.0338,0.09190000000000001
2003,8.07,0.388,0.0344,0.0917
2004,8.64,0.369,0.0349,0.0418
2005,7.98,0.435,0.0355,0.0345
2006,8.85,0.432,0.036,0.0368
2007,8.85,0.439,0.0365,0.0375
2008,6.67,0.463,0.036899999999999995,0.0367
2009,6.97,0.45,0.037399999999999996,0.033
2010,8.62,0.466,0.037899999999999996,0.0345
2011,9.88,0.467,0.0385,0.0367
2012,7.47,0.628,0.0391,0.0513
2013,8.66,0.711,0.039700000000000006,0.0601
2014,14.8,0.788,0.040299999999999996,0.08259999999999999
2015,15.7,0.632,0.041,0.0681
2016,17.1,1.29,0.0416,0.117
2017,17.6,1.3,0.0422,0.117
2018,25.0,1.31,0.0428,0.117