year,IPC1,IPC2,IPC4,IPCMAG
1850,0.00214,0.0,1.46e-07,4.64e-07
1851,0.00259,0.0,1.7699999999999998e-07,5.62e-07
1852,0.0034100000000000003,0.0,2.32e-07,7.389999999999999e-07
1853,0.00443,0.0,3.0200000000000003e-07,9.62e-07
1854,0.00551,0.0,3.75e-07,1.2e-06
1855,0.0064800000000000005,0.0,4.42e-07,1.41e-06
1856,0.00741,0.0,5.05e-07,1.61e-06
1857,0.00833,0.0,5.67e-07,1.81e-06
1858,0.00911,0.0,6.2e-07,1.98e-06
1859,0.00966,0.0,6.58e-07,2.1e-06
1860,0.0126,0.0,8.6e-07,2.74e-06
1861,0.0161,0.0,1.1e-06,3.5e-06
1862,0.0145,0.0,9.86e-07,3.14e-06
1863,0.015099999999999999,0.0,1.03e-06,3.27e-06
1864,0.016800000000000002,0.0,1.15e-06,3.65e-06
1865,0.016,0.0,1.09e-06,3.48e-06
1866,0.0514,0.0,3.5e-06,1.12e-05
1867,0.0588,0.0,4.01e-06,1.2800000000000001e-05
1868,0.0484,0.0,3.3e-06,1.0500000000000001e-05
1869,0.06609999999999999,0.0,4.499999999999999e-06,1.43e-05
1870,0.0718,0.0,4.890000000000001e-06,1.56e-05
1871,0.0975,0.0,6.64e-06,2.12e-05
1872,0.1,0.0,6.82e-06,2.17e-05
1873,0.09259999999999999,0.0,6.31e-06,2.01e-05
1874,0.112,0.0,7.6e-06,2.42e-05
1875,0.127,0.0,8.64e-06,2.75e-05
1876,0.155,0.0,1.06e-05,3.37e-05
1877,0.155,0.0,1.0500000000000001e-05,3.35e-05
1878,0.203,0.0,1.3899999999999999e-05,4.41e-05
1879,0.205,0.0,1.4e-05,4.45e-05
1880,0.241,0.0,1.65e-05,5.24e-05
1881,0.247,0.0,1.68e-05,5.36e-05
1882,0.259,0.0,1.77e-05,5.62e-05
1883,0.296,0.0,2.02e-05,6.419999999999999e-05
1884,0.284,0.0,1.94e-05,6.16e-05
1885,0.3,0.0,2.04e-05,6.500000000000001e-05
1886,0.306,0.0,2.09e-05,6.65e-05
1887,0.309,0.0,2.11e-05,6.71e-05
1888,0.319,0.0,2.17e-05,6.92e-05
1889,0.353,0.0,2.4e-05,7.65e-05
1890,0.39,0.0,2.66e-05,8.47e-05
1891,0.415,0.0,2.83e-05,9.01e-05
1892,0.442,0.0,3.01e-05,9.59e-05
1893,0.517,0.0,3.52e-05,0.000112
1894,0.545,0.0,3.71e-05,0.000118
1895,0.59,0.0,4.02e-05,0.000128
1896,0.607,0.0,4.13e-05,0.000132
1897,0.705,0.0,4.8e-05,0.000153
1898,0.788,0.0,5.37e-05,0.000171
1899,0.94,0.0,6.41e-05,0.000204
1900,1.05,0.0,7.19e-05,0.000229
1901,1.05,0.0,7.14e-05,0.00022700000000000002
1902,1.02,0.0,6.96e-05,0.000222
1903,1.03,0.0,7.000000000000001e-05,0.000223
1904,1.17,0.0,7.960000000000001e-05,0.000253
1905,1.1,0.0,7.5e-05,0.00023899999999999998
1906,1.25,0.0,8.55e-05,0.000272
1907,1.42,0.0,9.71e-05,0.000309
1908,1.43,0.0,9.79e-05,0.000312
1909,1.51,0.0,0.000103,0.000328
1910,1.46,0.0,9.97e-05,0.00031800000000000003
1911,1.54,1.1599999999999999e-05,0.000106,0.00033600000000000004
1912,1.79,4.44e-05,0.000122,0.000389
1913,1.98,9.59e-05,0.000136,0.000432
1914,1.74,0.000163,0.00011899999999999999,0.00038
1915,1.54,0.000244,0.00010499999999999999,0.000335
1916,1.64,0.00033600000000000004,0.000112,0.000357
1917,1.52,0.000435,0.000104,0.000332
1918,0.6,0.00054,4.1e-05,0.00013000000000000002
1919,0.46,0.000647,3.14e-05,0.0001
1920,0.426,0.000754,2.91e-05,9.26e-05
1921,0.479,0.000869,3.27e-05,0.000104
1922,0.583,0.001,3.9800000000000005e-05,0.000127
1923,0.641,0.00115,4.38e-05,0.00013900000000000002
1924,0.794,0.00131,5.4199999999999996e-05,0.00017299999999999998
1925,0.765,0.00149,5.22e-05,0.000166
1926,1.17,0.0016799999999999999,7.98e-05,0.000254
1927,1.47,0.009519999999999999,0.0001,0.000319
1928,1.66,0.0091,0.00011300000000000001,0.00035999999999999997
1929,1.73,0.011,0.000118,0.000376
1930,2.16,0.013900000000000001,0.000147,0.00046899999999999996
1931,2.58,0.015,0.000176,0.0005620000000000001
1932,3.07,0.0156,0.00020999999999999998,0.000669
1933,3.53,0.0132,0.000242,0.000769
1934,4.33,0.0165,0.000296,0.000944
1935,4.97,0.0202,0.00034,0.00108
1936,5.75,0.0256,0.000393,0.00125
1937,5.86,0.0247,0.00040100000000000004,0.00128
1938,6.18,0.026199999999999998,0.000423,0.00135
1939,6.27,0.026600000000000002,0.000428,0.00136
1940,7.71,0.0265,0.000528,0.0016799999999999999
1941,6.66,0.0269,0.000455,0.00145
1942,4.28,0.0238,0.000292,0.00093
1943,5.94,0.0206,0.000406,0.0012900000000000001
1944,5.09,0.0175,0.000348,0.00111
1945,6.09,0.0144,0.000416,0.00133
1946,6.81,0.020399999999999998,0.000465,0.00148
1947,8.18,0.0259,0.000559,0.0017800000000000001
1948,8.63,0.032799999999999996,0.0005899999999999999,0.00188
1949,9.78,0.0384,0.000669,0.00213
1950,10.9,0.048,0.000743,0.00237
1951,11.8,0.056,0.000805,0.00256
1952,12.5,0.06420000000000001,0.000856,0.00273
1953,13.1,0.07379999999999999,0.000898,0.0028599999999999997
1954,14.3,0.0881,0.000978,0.00311
1955,16.1,0.104,0.0011,0.0035099999999999997
1956,17.4,0.117,0.0011899999999999999,0.00379
1957,18.7,0.136,0.00128,0.00408
1958,19.5,0.156,0.00133,0.00425
1959,20.1,0.18,0.0013700000000000001,0.00438
1960,20.4,0.209,0.00139,0.00444
1961,20.3,0.232,0.00139,0.00442
1962,20.6,0.259,0.0014,0.00447
1963,21.5,0.278,0.00147,0.00468
1964,22.4,0.297,0.0015300000000000001,0.004860000000000001
1965,23.3,0.328,0.00159,0.005059999999999999
1966,24.3,0.361,0.00165,0.0052699999999999995
1967,24.8,0.383,0.0016899999999999999,0.00538
1968,24.9,0.398,0.0016899999999999999,0.00539
1969,25.5,0.412,0.00174,0.00553
1970,27.2,0.442,0.00185,0.00561
1971,28.1,0.475,0.00191,0.00635
1972,29.2,0.506,0.00199,0.00684
1973,29.9,0.537,0.0020299999999999997,0.0076
1974,30.4,0.574,0.00206,0.008199999999999999
1975,31.5,0.624,0.00214,0.00897
1976,32.4,0.651,0.0022,0.00888
1977,33.1,0.672,0.00225,0.00924
1978,33.7,0.682,0.00228,0.00931
1979,33.8,0.681,0.00229,0.0091
1980,35.4,0.696,0.00239,0.0101
1981,33.1,0.714,0.0022400000000000002,0.0103
1982,33.5,0.721,0.00227,0.011
1983,33.4,0.766,0.00226,0.0126
1984,33.2,0.784,0.00225,0.0126
1985,36.8,0.805,0.00249,0.013300000000000001
1986,37.6,0.868,0.00254,0.0141
1987,37.9,0.888,0.00257,0.0144
1988,38.4,0.905,0.0026,0.014199999999999999
1989,36.9,0.904,0.0025,0.0121
1990,37.2,0.958,0.00225,0.013099999999999999
1991,34.3,0.96,0.00225,0.0121
1992,25.3,0.552,0.0024500000000000004,0.00309
1993,20.0,0.327,0.00221,0.0025800000000000003
1994,20.8,0.568,0.0026,0.00281
1995,19.3,0.597,0.00299,0.00423
1996,19.9,0.606,0.00246,0.00424
1997,19.4,0.651,0.0025800000000000003,0.00624
1998,17.4,0.693,0.00265,0.0253
1999,16.0,0.616,0.00281,0.0263
2000,16.2,0.606,0.00282,0.0198
2001,16.6,0.625,0.00221,0.0213
2002,16.1,0.446,0.0023799999999999997,0.019100000000000002
2003,18.0,0.488,0.00264,0.0172
2004,18.3,0.614,0.00139,0.0104
2005,18.2,0.585,0.00146,0.00863
2006,17.6,0.604,0.0006889999999999999,0.00656
2007,20.8,0.783,0.000656,0.0058
2008,18.9,0.809,0.0011,0.00532
2009,16.7,0.313,0.000939,0.0014199999999999998
2010,21.4,0.371,0.000838,0.00937
2011,21.5,0.488,0.000804,0.00394
2012,20.3,0.708,0.000856,0.00701
2013,22.1,0.824,0.0010400000000000001,0.00647
2014,21.7,0.526,0.000967,0.00867
2015,19.3,0.332,0.000994,0.00907
2016,21.1,0.307,0.00109,0.014
2017,22.4,0.447,0.00102,0.016399999999999998
2018,21.7,0.428,0.00108,0.019399999999999997