year,IPC1,IPC2,IPC4,IPCMAG
1850,0.138,0.00146,1.06e-05,0.0036
1851,0.145,0.0015400000000000001,1.12e-05,0.00379
1852,0.153,0.0016200000000000001,1.18e-05,0.0039900000000000005
1853,0.161,0.00171,1.24e-05,0.00421
1854,0.17,0.00181,1.31e-05,0.00444
1855,0.179,0.0019,1.38e-05,0.004690000000000001
1856,0.189,0.0020099999999999996,1.46e-05,0.004940000000000001
1857,0.199,0.00212,1.53e-05,0.00521
1858,0.21,0.0022299999999999998,1.62e-05,0.0054800000000000005
1859,0.221,0.00234,1.7e-05,0.00577
1860,0.218,0.00232,1.68e-05,0.0057
1861,0.717,0.00762,5.52e-05,0.018699999999999998
1862,1.22,0.0129,9.379999999999999e-05,0.0319
1863,1.72,0.0183,0.000132,0.045
1864,2.22,0.023600000000000003,0.000171,0.0581
1865,2.72,0.0289,0.00020999999999999998,0.0712
1866,3.23,0.0343,0.000248,0.0843
1867,3.73,0.0396,0.000287,0.0974
1868,4.23,0.044899999999999995,0.000325,0.11
1869,4.73,0.0502,0.000364,0.124
1870,5.23,0.055600000000000004,0.00040300000000000004,0.137
1871,5.73,0.060899999999999996,0.000441,0.15
1872,6.23,0.06620000000000001,0.00047999999999999996,0.163
1873,6.73,0.0715,0.000518,0.176
1874,7.24,0.07690000000000001,0.0005570000000000001,0.189
1875,7.74,0.08220000000000001,0.000596,0.202
1876,13.4,0.142,0.00103,0.35
1877,14.1,0.149,0.00108,0.367
1878,14.7,0.157,0.00113,0.385
1879,15.8,0.168,0.00122,0.414
1880,16.8,0.178,0.0012900000000000001,0.438
1881,17.7,0.188,0.00136,0.463
1882,18.1,0.192,0.00139,0.473
1883,19.3,0.206,0.00149,0.506
1884,20.0,0.212,0.0015400000000000001,0.522
1885,21.0,0.223,0.0016200000000000001,0.548
1886,22.1,0.234,0.0017,0.576
1887,23.2,0.246,0.0017800000000000001,0.606
1888,24.8,0.264,0.00191,0.649
1889,26.3,0.279,0.00202,0.687
1890,28.1,0.274,0.00216,0.735
1891,29.1,0.275,0.0022400000000000002,0.762
1892,29.6,0.275,0.00228,0.773
1893,30.3,0.275,0.00233,0.791
1894,31.1,0.275,0.00239,0.81
1895,32.3,0.275,0.00248,0.841
1896,33.1,0.276,0.00254,0.862
1897,35.1,0.276,0.00269,0.912
1898,36.0,0.276,0.00275,0.932
1899,37.0,0.277,0.00282,0.957
1900,36.8,0.277,0.0028,0.95
1901,38.6,0.277,0.00292,0.992
1902,39.4,0.278,0.00296,1.01
1903,40.4,0.278,0.00302,1.02
1904,41.2,0.279,0.0030499999999999998,1.03
1905,42.8,0.279,0.00314,1.06
1906,45.0,0.28,0.00328,1.11
1907,47.6,0.281,0.00344,1.17
1908,48.7,0.282,0.0035099999999999997,1.19
1909,48.6,0.282,0.00349,1.18
1910,48.2,0.283,0.0034500000000000004,1.17
1911,48.8,0.284,0.00349,1.19
1912,51.5,0.285,0.00372,1.26
1913,53.6,0.286,0.0038900000000000002,1.32
1914,48.9,0.287,0.00354,1.2
1915,48.6,0.288,0.00354,1.2
1916,51.3,0.289,0.00376,1.28
1917,48.2,0.29,0.00354,1.2
1918,41.3,0.292,0.00302,1.02
1919,39.1,0.293,0.00285,0.968
1920,38.7,0.294,0.00283,0.959
1921,37.4,0.296,0.00271,0.922
1922,34.1,0.298,0.00242,0.822
1923,36.5,0.3,0.00256,0.869
1924,44.7,0.302,0.00314,1.07
1925,43.1,0.304,0.00296,1.0
1926,44.4,0.306,0.003,1.02
1927,48.0,0.309,0.00322,1.09
1928,50.9,0.311,0.0033900000000000002,1.15
1929,56.5,0.73,0.00379,1.29
1930,50.4,0.735,0.0033,1.12
1931,47.7,0.738,0.00309,1.05
1932,42.7,0.7,0.00269,0.914
1933,39.8,0.624,0.0024700000000000004,0.837
1934,39.8,0.643,0.00246,0.835
1935,40.8,0.667,0.0025299999999999997,0.86
1936,43.6,0.705,0.00275,0.934
1937,51.1,0.818,0.00333,1.13
1938,58.0,0.635,0.00387,1.31
1939,62.9,0.453,0.00424,1.44
1940,69.9,0.437,0.00478,1.62
1941,70.2,0.478,0.00481,1.63
1942,75.0,0.5,0.00519,1.76
1943,81.8,0.528,0.005730000000000001,1.94
1944,78.4,0.616,0.00547,1.86
1945,45.1,0.708,0.0029,0.985
1946,53.8,0.804,0.0035800000000000003,1.22
1947,59.7,1.01,0.004059999999999999,1.38
1948,63.8,1.13,0.00438,1.49
1949,66.6,1.2,0.0046,1.56
1950,68.1,1.29,0.004719999999999999,1.6
1951,72.3,1.42,0.005030000000000001,1.71
1952,77.4,1.54,0.00538,1.82
1953,80.8,1.68,0.00557,1.89
1954,86.8,1.88,0.00594,2.02
1955,90.9,2.12,0.0061600000000000005,2.09
1956,98.1,2.34,0.00661,2.24
1957,103.0,2.66,0.00687,2.33
1958,112.0,2.96,0.00749,2.54
1959,113.0,3.3,0.00746,2.53
1960,120.0,3.56,0.00795,2.7
1961,130.0,3.79,0.00863,2.93
1962,138.0,4.05,0.0092,3.12
1963,144.0,4.0,0.009710000000000002,3.29
1964,150.0,4.25,0.0101,3.42
1965,146.0,4.47,0.009810000000000001,3.33
1966,146.0,4.77,0.00973,3.3
1967,146.0,5.03,0.00967,3.28
1968,152.0,5.21,0.0101,3.43
1969,161.0,5.47,0.0107,3.64
1970,182.0,5.69,0.0109,3.59
1971,189.0,5.94,0.0109,3.47
1972,191.0,6.11,0.0109,3.35
1973,192.0,6.24,0.0109,3.23
1974,178.0,6.46,0.0109,3.11
1975,186.0,6.62,0.0109,3.01
1976,193.0,6.87,0.0109,2.86
1977,198.0,7.08,0.0109,2.79
1978,200.0,7.24,0.0109,2.68
1979,195.0,7.14,0.0109,2.56
1980,196.0,7.11,0.0109,2.48
1981,194.0,7.46,0.0109,2.35
1982,191.0,7.34,0.0109,2.19
1983,191.0,7.37,0.0109,2.06
1984,197.0,7.33,0.011,1.97
1985,192.0,7.08,0.011,1.82
1986,192.0,6.88,0.0111,1.72
1987,190.0,6.91,0.011300000000000001,1.58
1988,186.0,7.09,0.0116,1.47
1989,179.0,6.69,0.0123,1.36
1990,167.0,5.9,0.0136,1.21
1991,153.0,5.08,0.016300000000000002,1.13
1992,138.0,5.03,0.019100000000000002,1.06
1993,134.0,4.72,0.0261,0.98
1994,127.0,5.14,0.037,0.897
1995,125.0,4.8,0.0416,0.842
1996,126.0,4.91,0.0418,0.791
1997,127.0,4.78,0.0438,0.705
1998,123.0,4.9,0.044,0.638
1999,112.0,4.66,0.045,0.574
2000,124.0,4.64,0.0371,0.501
2001,124.0,4.58,0.0506,0.446
2002,120.0,4.25,0.0729,0.372
2003,122.0,4.17,0.227,0.308
2004,117.0,4.57,0.219,0.241
2005,120.0,4.47,0.19,0.172
2006,122.0,4.62,0.259,0.1
2007,123.0,4.81,0.258,0.0385
2008,116.0,4.79,0.29,0.0198
2009,108.0,3.93,0.308,0.019399999999999997
2010,112.0,3.79,0.349,0.045399999999999996
2011,107.0,3.91,0.367,0.055600000000000004
2012,101.0,3.72,0.392,0.033
2013,98.9,3.64,0.395,0.0727
2014,96.6,3.97,0.396,0.083
2015,97.7,3.69,0.397,0.0943
2016,99.4,3.76,0.406,0.0772
2017,97.5,3.63,0.416,0.0772
2018,96.7,3.61,0.426,0.0773