year,IPC1,IPC2,IPC4,IPCMAG
1850,0.0,0.0,0.0,0.0
1851,0.0,0.0,0.0,0.0
1852,0.0,0.0,0.0,0.0
1853,0.0,0.0,0.0,0.0
1854,0.0,0.0,0.0,0.0
1855,0.0,0.0,0.0,0.0
1856,0.0,0.0,0.0,0.0
1857,0.0,0.0,0.0,0.0
1858,0.0,0.0,0.0,0.0
1859,0.0,0.0,0.0,0.0
1860,0.0,0.0,0.0,0.0
1861,0.0,0.0,0.0,0.0
1862,0.0,0.0,0.0,0.0
1863,0.0,0.0,0.0,0.0
1864,0.0,0.0,0.0,0.0
1865,0.0,0.0,0.0,0.0
1866,0.0,0.0,0.0,0.0
1867,0.0,0.0,0.0,0.0
1868,0.0,0.0,0.0,0.0
1869,0.0,0.0,0.0,0.0
1870,0.0,0.0,0.0,0.0
1871,0.0,0.0,0.0,0.0
1872,0.0,0.0,0.0,0.0
1873,0.0,0.0,0.0,0.0
1874,0.0,0.0,0.0,0.0
1875,0.0,0.0,0.0,0.0
1876,0.0,0.0,0.0,0.0
1877,0.0,0.0,0.0,0.0
1878,0.0,0.0,0.0,0.0
1879,0.0,0.0,0.0,0.0
1880,0.0,0.0,0.0,0.0
1881,0.00222,0.00479,1.36e-07,1.65e-06
1882,0.00524,0.011300000000000001,3.21e-07,3.9e-06
1883,0.008919999999999999,0.0193,5.469999999999999e-07,6.64e-06
1884,0.013099999999999999,0.028399999999999998,8.04e-07,9.77e-06
1885,0.0177,0.038200000000000005,1.09e-06,1.32e-05
1886,0.023100000000000002,0.0499,1.42e-06,1.72e-05
1887,0.0297,0.06409999999999999,1.82e-06,2.2100000000000002e-05
1888,0.0371,0.08020000000000001,2.27e-06,2.76e-05
1889,0.045,0.0973,2.76e-06,3.35e-05
1890,0.0531,0.0731,3.2599999999999997e-06,3.95e-05
1891,0.0619,0.0732,3.8e-06,4.61e-05
1892,0.0686,0.0732,4.2e-06,5.11e-05
1893,0.122,0.0733,7.46e-06,9.06e-05
1894,0.232,0.0733,1.4200000000000001e-05,0.00017299999999999998
1895,0.232,0.0734,1.4200000000000001e-05,0.00017299999999999998
1896,0.259,0.0735,1.59e-05,0.000193
1897,0.201,0.0735,1.23e-05,0.00015
1898,0.305,0.0736,1.87e-05,0.00022700000000000002
1899,0.356,0.0737,2.18e-05,0.000265
1900,0.482,0.07379999999999999,2.96e-05,0.000359
1901,0.526,0.07390000000000001,3.23e-05,0.00039200000000000004
1902,0.493,0.074,3.0200000000000002e-05,0.000367
1903,0.535,0.0742,3.2800000000000004e-05,0.000399
1904,0.571,0.07429999999999999,3.5000000000000004e-05,0.000425
1905,0.619,0.0745,3.8e-05,0.00046100000000000004
1906,0.741,0.0747,4.5400000000000006e-05,0.0005520000000000001
1907,0.754,0.07490000000000001,4.62e-05,0.0005620000000000001
1908,0.812,0.0751,4.98e-05,0.000605
1909,0.834,0.07529999999999999,5.11e-05,0.000621
1910,0.825,0.0755,5.06e-05,0.000614
1911,0.894,0.0757,5.4800000000000004e-05,0.000665
1912,0.916,0.07590000000000001,5.6099999999999995e-05,0.0006820000000000001
1913,2.51,0.0762,0.000154,0.0018700000000000001
1914,2.46,0.0765,0.00015099999999999998,0.00183
1915,2.33,0.0767,0.00014299999999999998,0.00174
1916,2.16,0.077,0.000132,0.00161
1917,1.99,0.07740000000000001,0.000122,0.00148
1918,1.85,0.0777,0.000114,0.00138
1919,1.8,0.07809999999999999,0.000111,0.00134
1920,2.39,0.0785,0.000147,0.0017800000000000001
1921,2.55,0.07890000000000001,0.000156,0.0019
1922,3.6,0.0793,0.000221,0.00269
1923,3.94,0.0798,0.000242,0.00294
1924,4.04,0.0804,0.000248,0.0030099999999999997
1925,4.41,0.081,0.00027100000000000003,0.00329
1926,4.28,0.08159999999999999,0.000262,0.00319
1927,4.82,0.08220000000000001,0.000296,0.00359
1928,5.24,0.238,0.000322,0.00391
1929,5.99,0.244,0.000367,0.0044599999999999996
1930,5.55,0.249,0.00034100000000000005,0.00414
1931,4.97,0.255,0.000305,0.0037099999999999998
1932,4.51,0.213,0.000277,0.0033599999999999997
1933,4.16,0.211,0.000255,0.0031
1934,4.36,0.216,0.00026700000000000004,0.00325
1935,4.56,0.239,0.000279,0.0033900000000000002
1936,4.48,0.212,0.000275,0.0033399999999999997
1937,5.06,0.21,0.000311,0.00377
1938,4.94,0.229,0.000303,0.00368
1939,5.2,0.221,0.000319,0.0038799999999999998
1940,6.21,0.09659999999999999,0.000381,0.00463
1941,4.6,0.136,0.00028199999999999997,0.0034300000000000003
1942,1.61,0.209,9.89e-05,0.0012
1943,0.0030499999999999998,0.251,3.8800000000000003e-08,4.72e-07
1944,0.0182,0.114,9.709999999999999e-07,1.18e-05
1945,3.07,0.146,0.000188,0.00229
1946,6.0,0.241,0.000368,0.00447
1947,8.22,0.374,0.000504,0.0061200000000000004
1948,9.32,0.375,0.0005719999999999999,0.0069500000000000004
1949,10.6,0.404,0.000653,0.007940000000000001
1950,9.65,0.403,0.000592,0.00719
1951,9.12,0.407,0.0005600000000000001,0.0068
1952,9.28,0.457,0.000569,0.00691
1953,8.92,0.476,0.0005470000000000001,0.00664
1954,10.8,0.528,0.00066,0.00802
1955,12.4,0.595,0.000762,0.00925
1956,14.3,0.628,0.000875,0.0106
1957,15.3,0.748,0.00094,0.0114
1958,15.0,0.783,0.000921,0.0112
1959,17.2,0.868,0.0010500000000000002,0.0128
1960,18.6,0.937,0.00114,0.013900000000000001
1961,19.6,0.961,0.0012,0.0146
1962,19.9,1.03,0.00122,0.0148
1963,22.0,1.13,0.00135,0.016399999999999998
1964,24.7,1.2,0.00152,0.0184
1965,24.7,1.25,0.00151,0.0184
1966,23.7,1.32,0.00146,0.0177
1967,22.6,1.37,0.00139,0.016800000000000002
1968,23.3,1.51,0.0014299999999999998,0.0174
1969,23.6,1.59,0.00145,0.0176
1970,30.7,1.67,0.0017800000000000001,0.0235
1971,33.6,1.8,0.0019,0.0237
1972,31.4,1.93,0.0020099999999999996,0.0237
1973,33.8,2.27,0.00211,0.0237
1974,34.4,2.4,0.00231,0.023899999999999998
1975,36.5,2.85,0.00242,0.0249
1976,37.0,2.68,0.00257,0.0263
1977,35.4,2.68,0.00275,0.027
1978,38.0,2.98,0.00296,0.028300000000000002
1979,40.7,3.1,0.00312,0.032600000000000004
1980,39.9,3.19,0.00327,0.030899999999999997
1981,49.5,3.18,0.0034,0.0317
1982,43.8,3.26,0.0035099999999999997,0.0327
1983,48.7,3.42,0.00361,0.0268
1984,52.7,3.29,0.0037400000000000003,0.0522
1985,54.1,3.23,0.0038399999999999997,0.0564
1986,55.7,3.59,0.00401,0.0405
1987,54.9,3.77,0.00411,0.044700000000000004
1988,56.4,3.72,0.00418,0.032799999999999996
1989,56.7,3.53,0.00431,0.0549
1990,55.8,3.1,0.0043,0.045
1991,34.8,2.77,0.00415,0.0293
1992,43.5,1.89,0.0040999999999999995,0.055299999999999995
1993,38.2,1.19,0.00432,0.0443
1994,36.8,1.55,0.00445,0.0572
1995,38.6,1.57,0.0046,0.0422
1996,45.1,2.07,0.00468,0.09820000000000001
1997,48.5,2.27,0.004900000000000001,0.09559999999999999
1998,51.0,2.35,0.005019999999999999,0.104
1999,35.4,1.45,0.004730000000000001,0.0851
2000,39.1,1.84,0.00488,0.0891
2001,41.7,2.07,0.00498,0.182
2002,44.7,2.14,0.00518,0.148
2003,47.9,1.85,0.00533,0.109
2004,52.1,2.34,0.00557,0.166
2005,49.1,2.32,0.00575,0.157
2006,53.1,2.37,0.00584,0.033299999999999996
2007,51.3,2.39,0.00588,0.030600000000000002
2008,50.8,2.49,0.00601,0.025
2009,44.9,1.97,0.0061200000000000004,0.026699999999999998
2010,45.1,2.05,0.00619,0.0299
2011,48.5,2.27,0.0063,0.0334
2012,43.2,1.95,0.00644,0.0508
2013,44.0,1.88,0.00643,0.0798
2014,36.6,1.61,0.00641,0.0347
2015,47.2,1.62,0.0064,0.0469
2016,49.3,1.68,0.00642,0.0694
2017,50.9,1.7,0.00643,0.0686
2018,51.4,1.73,0.00653,0.0687