year,IPC1,IPC2,IPC4,IPCMAG
1850,0.019600000000000003,5.35e-05,8.57e-06,0.000114
1851,0.0206,5.63e-05,9.02e-06,0.00011999999999999999
1852,0.0218,5.93e-05,9.509999999999999e-06,0.000127
1853,0.0229,6.26e-05,1e-05,0.000134
1854,0.0242,6.6e-05,1.06e-05,0.00014099999999999998
1855,0.0255,6.96e-05,1.12e-05,0.000149
1856,0.0269,7.340000000000001e-05,1.18e-05,0.000157
1857,0.028399999999999998,7.74e-05,1.24e-05,0.000165
1858,0.0299,8.15e-05,1.31e-05,0.000174
1859,0.0314,8.57e-05,1.3700000000000001e-05,0.000183
1860,0.033,9.01e-05,1.44e-05,0.000192
1861,0.0347,9.460000000000001e-05,1.52e-05,0.000202
1862,0.0364,9.94e-05,1.59e-05,0.000212
1863,0.038299999999999994,0.000104,1.67e-05,0.000223
1864,0.0402,0.00011,1.76e-05,0.00023400000000000002
1865,0.0422,0.000115,1.84e-05,0.000246
1866,0.0442,0.000121,1.93e-05,0.000258
1867,0.0464,0.000127,2.03e-05,0.00027
1868,0.0487,0.000133,2.13e-05,0.00028399999999999996
1869,0.051,0.00013900000000000002,2.23e-05,0.000297
1870,0.0535,0.000146,2.34e-05,0.000312
1871,0.056100000000000004,0.000153,2.4500000000000003e-05,0.00032700000000000003
1872,0.0588,0.00016,2.57e-05,0.00034300000000000004
1873,0.061799999999999994,0.00016800000000000002,2.7e-05,0.00035999999999999997
1874,0.0649,0.000177,2.8400000000000003e-05,0.000378
1875,0.0681,0.000186,2.98e-05,0.000397
1876,0.0714,0.000195,3.12e-05,0.000416
1877,0.07490000000000001,0.000204,3.27e-05,0.00043599999999999997
1878,0.07840000000000001,0.000214,3.43e-05,0.000457
1879,0.082,0.000224,3.59e-05,0.00047799999999999996
1880,0.0857,0.00023400000000000002,3.75e-05,0.000499
1881,0.08940000000000001,0.000244,3.91e-05,0.000521
1882,0.0933,0.000254,4.08e-05,0.0005430000000000001
1883,0.0973,0.000265,4.25e-05,0.000566
1884,0.101,0.00027600000000000004,4.43e-05,0.0005899999999999999
1885,0.106,0.00028799999999999995,4.62e-05,0.000615
1886,0.11,0.0003,4.81e-05,0.000641
1887,0.115,0.000312,5.01e-05,0.0006670000000000001
1888,0.119,0.000325,5.21e-05,0.000695
1889,0.124,0.000339,5.43e-05,0.000723
1890,0.136,0.000333,5.93e-05,0.00079
1891,0.141,0.000333,6.15e-05,0.000819
1892,0.146,0.000333,6.379999999999999e-05,0.00085
1893,0.152,0.000333,6.63e-05,0.000883
1894,0.158,0.000333,6.900000000000001e-05,0.000919
1895,0.164,0.000333,7.18e-05,0.0009559999999999999
1896,0.171,0.000333,7.48e-05,0.000996
1897,0.178,0.000333,7.78e-05,0.0010400000000000001
1898,0.185,0.000333,8.1e-05,0.00108
1899,0.193,0.000333,8.44e-05,0.0011200000000000001
1900,0.201,0.000333,8.78e-05,0.00117
1901,0.209,0.000333,9.16e-05,0.00122
1902,0.219,0.000333,9.59e-05,0.00128
1903,0.23,0.000333,0.000101,0.00134
1904,0.242,0.00033400000000000004,0.000106,0.00141
1905,0.253,0.00033400000000000004,0.000111,0.00148
1906,0.265,0.00033400000000000004,0.000116,0.0015400000000000001
1907,0.276,0.00033400000000000004,0.000121,0.00161
1908,0.286,0.000335,0.000125,0.00166
1909,0.294,0.000335,0.000129,0.00172
1910,0.302,0.000335,0.000132,0.00176
1911,0.308,0.00034300000000000004,0.000134,0.0017900000000000001
1912,0.313,0.000365,0.00013700000000000002,0.00182
1913,0.317,0.000399,0.00013900000000000002,0.00185
1914,0.322,0.000443,0.00014099999999999998,0.0018700000000000001
1915,0.326,0.000496,0.00014199999999999998,0.0019
1916,0.329,0.000555,0.00014399999999999998,0.0019199999999999998
1917,0.333,0.00062,0.000146,0.0019399999999999999
1918,0.338,0.000687,0.000148,0.00197
1919,0.342,0.000755,0.00015,0.00199
1920,0.347,0.000823,0.000152,0.00202
1921,0.352,0.000894,0.000154,0.0020499999999999997
1922,0.357,0.0009739999999999999,0.000156,0.0020800000000000003
1923,0.362,0.00106,0.000158,0.00211
1924,0.368,0.00116,0.000161,0.00214
1925,0.373,0.00126,0.000163,0.00217
1926,0.379,0.0013700000000000001,0.000166,0.00221
1927,0.386,0.00149,0.00016900000000000002,0.00225
1928,0.393,0.0016200000000000001,0.00017199999999999998,0.00229
1929,0.402,0.00175,0.000176,0.00234
1930,0.411,0.00189,0.00017999999999999998,0.00239
1931,0.423,0.0020299999999999997,0.000185,0.00246
1932,0.439,0.00218,0.000192,0.00256
1933,0.458,0.00234,0.0002,0.00267
1934,0.48,0.00252,0.00020999999999999998,0.00279
1935,0.503,0.00271,0.00022,0.0029300000000000003
1936,0.529,0.00292,0.000231,0.0030800000000000003
1937,0.556,0.00315,0.000243,0.0032400000000000003
1938,0.583,0.0034100000000000003,0.000255,0.0034
1939,0.611,0.0037099999999999998,0.00026700000000000004,0.0035600000000000002
1940,0.638,0.004030000000000001,0.000279,0.00372
1941,0.665,0.0044599999999999996,0.00029099999999999997,0.00387
1942,0.692,0.00505,0.000303,0.004030000000000001
1943,0.721,0.00577,0.000315,0.004200000000000001
1944,0.75,0.0066,0.000328,0.00437
1945,0.781,0.00752,0.000342,0.00455
1946,0.814,0.00851,0.000356,0.00474
1947,0.848,0.009550000000000001,0.000371,0.004940000000000001
1948,0.885,0.0106,0.00038700000000000003,0.00515
1949,0.811,0.011699999999999999,0.000354,0.004719999999999999
1950,0.825,0.0127,0.000361,0.00481
1951,1.25,0.0292,0.000549,0.00731
1952,1.43,0.0354,0.000626,0.00834
1953,1.36,0.0416,0.000594,0.00791
1954,1.51,0.0684,0.000661,0.0088
1955,1.74,0.111,0.000763,0.010199999999999999
1956,1.93,0.148,0.0008449999999999999,0.011300000000000001
1957,1.98,0.165,0.000866,0.0115
1958,1.8,0.176,0.000786,0.0105
1959,1.86,0.245,0.0008129999999999999,0.0108
1960,2.05,0.272,0.0008950000000000001,0.0119
1961,2.03,0.258,0.000889,0.011800000000000001
1962,2.22,0.27,0.000972,0.0129
1963,2.44,0.272,0.00107,0.014199999999999999
1964,2.38,0.326,0.0010400000000000001,0.013800000000000002
1965,2.02,0.374,0.000885,0.011800000000000001
1966,2.21,0.377,0.000968,0.0129
1967,2.24,0.374,0.000978,0.013
1968,2.32,0.423,0.00101,0.0135
1969,2.55,0.493,0.00111,0.0148
1970,2.44,0.598,0.00136,0.0185
1971,2.99,0.599,0.00136,0.0157
1972,3.15,0.611,0.00148,0.0198
1973,3.19,0.598,0.00161,0.0171
1974,4.11,0.665,0.00174,0.0152
1975,4.11,0.684,0.00189,0.0144
1976,3.74,0.732,0.0020499999999999997,0.0201
1977,4.07,0.848,0.0022299999999999998,0.0201
1978,4.33,0.826,0.0024100000000000002,0.0313
1979,4.19,0.631,0.00262,0.0327
1980,5.05,0.906,0.00275,0.026
1981,5.33,0.928,0.0028799999999999997,0.026199999999999998
1982,3.67,0.901,0.0030099999999999997,0.026
1983,3.65,0.878,0.00314,0.023899999999999998
1984,3.39,0.805,0.00329,0.033
1985,3.04,0.604,0.0034300000000000003,0.039700000000000006
1986,3.18,0.883,0.0035800000000000003,0.0324
1987,4.1,0.896,0.0037400000000000003,0.031
1988,3.78,0.837,0.0038900000000000002,0.0565
1989,4.16,0.802,0.00405,0.047299999999999995
1990,4.6,0.957,0.00426,0.0419
1991,3.75,0.92,0.0044800000000000005,0.039700000000000006
1992,4.35,0.996,0.0047,0.023100000000000002
1993,5.12,0.929,0.004940000000000001,0.0268
1994,5.29,0.934,0.00517,0.0209
1995,6.15,1.01,0.00588,0.0169
1996,7.3,1.16,0.006019999999999999,0.032600000000000004
1997,6.17,1.07,0.00615,0.032100000000000004
1998,7.36,1.05,0.0063,0.037
1999,7.17,1.05,0.00643,0.0361
2000,7.23,0.843,0.00657,0.0492
2001,6.89,0.941,0.006679999999999999,0.0453
2002,6.12,1.03,0.0068,0.038700000000000005
2003,5.29,1.16,0.00692,0.045
2004,6.52,1.25,0.00704,0.053399999999999996
2005,7.99,1.48,0.0071600000000000006,0.0407
2006,9.19,1.5,0.00738,0.0466
2007,9.42,1.71,0.0076100000000000004,0.0318
2008,9.84,1.89,0.00784,0.0385
2009,12.1,2.2,0.00807,0.0219
2010,11.8,2.45,0.0083,0.0391
2011,12.8,2.83,0.00867,0.0181
2012,11.6,2.91,0.00906,0.0346
2013,12.3,3.2,0.009470000000000001,0.0495
2014,13.2,3.49,0.009890000000000001,0.0339
2015,13.7,3.74,0.0103,0.0195
2016,13.7,3.93,0.0107,0.0289
2017,14.7,3.92,0.0111,0.027800000000000002
2018,15.4,3.91,0.0116,0.027100000000000003