year,IPC1,IPC4
1850,1.2e-05,6.71e-05
1851,1.21e-05,6.69e-05
1852,1.22e-05,6.66e-05
1853,1.22e-05,6.64e-05
1854,1.23e-05,6.62e-05
1855,1.24e-05,6.6e-05
1856,1.24e-05,6.59e-05
1857,1.25e-05,6.57e-05
1858,1.26e-05,6.560000000000001e-05
1859,1.2699999999999999e-05,6.55e-05
1860,1.2699999999999999e-05,6.55e-05
1861,1.2800000000000001e-05,6.54e-05
1862,1.29e-05,6.54e-05
1863,1.3e-05,6.54e-05
1864,1.3e-05,6.54e-05
1865,1.31e-05,6.54e-05
1866,1.32e-05,6.54e-05
1867,1.33e-05,6.53e-05
1868,1.34e-05,6.53e-05
1869,1.34e-05,6.53e-05
1870,1.35e-05,6.53e-05
1871,1.3599999999999999e-05,6.54e-05
1872,1.3700000000000001e-05,6.55e-05
1873,1.38e-05,6.560000000000001e-05
1874,1.38e-05,6.59e-05
1875,1.3899999999999999e-05,6.610000000000001e-05
1876,1.4e-05,6.64e-05
1877,1.41e-05,6.67e-05
1878,1.4200000000000001e-05,6.7e-05
1879,1.43e-05,6.73e-05
1880,1.44e-05,6.759999999999999e-05
1881,1.44e-05,6.79e-05
1882,1.45e-05,6.829999999999999e-05
1883,1.46e-05,6.87e-05
1884,1.47e-05,6.91e-05
1885,1.48e-05,6.96e-05
1886,1.49e-05,7.000000000000001e-05
1887,1.4999999999999999e-05,7.04e-05
1888,1.5100000000000001e-05,7.09e-05
1889,1.52e-05,7.13e-05
1890,1.53e-05,7.489999999999999e-05
1891,1.54e-05,7.72e-05
1892,1.55e-05,7.950000000000001e-05
1893,1.56e-05,8.19e-05
1894,1.57e-05,8.44e-05
1895,1.58e-05,8.7e-05
1896,1.59e-05,8.96e-05
1897,1.6e-05,9.23e-05
1898,1.62e-05,9.5e-05
1899,1.63e-05,9.79e-05
1900,1.65e-05,0.000101
1901,1.66e-05,0.000104
1902,1.68e-05,0.000107
1903,1.7100000000000002e-05,0.00011
1904,1.73e-05,0.00011300000000000001
1905,1.76e-05,0.000116
1906,1.78e-05,0.00011999999999999999
1907,1.8100000000000003e-05,0.000123
1908,1.84e-05,0.000127
1909,1.8599999999999998e-05,0.00013000000000000002
1910,1.88e-05,0.000134
1911,1.91e-05,0.00013800000000000002
1912,1.93e-05,0.00014199999999999998
1913,1.95e-05,0.000146
1914,1.9699999999999998e-05,0.00015
1915,1.9900000000000003e-05,0.000154
1916,2.01e-05,0.000158
1917,2.03e-05,0.000162
1918,2.04e-05,0.00016700000000000002
1919,2.06e-05,0.000171
1920,2.09e-05,0.000176
1921,2.11e-05,0.00017999999999999998
1922,2.12e-05,0.000185
1923,2.14e-05,0.00019
1924,2.16e-05,0.000195
1925,2.18e-05,0.0002
1926,2.2e-05,0.000206
1927,2.22e-05,0.000211
1928,2.2499999999999998e-05,0.000217
1929,2.2700000000000003e-05,0.000222
1930,2.3e-05,0.000228
1931,2.33e-05,0.00023400000000000002
1932,2.3800000000000003e-05,0.00023899999999999998
1933,2.4299999999999998e-05,0.000245
1934,2.49e-05,0.000251
1935,2.55e-05,0.000257
1936,2.61e-05,0.000264
1937,2.66e-05,0.00027
1938,2.7e-05,0.00027600000000000004
1939,2.7400000000000002e-05,0.000283
1940,2.76e-05,0.000289
1941,2.77e-05,0.00029499999999999996
1942,2.77e-05,0.000301
1943,2.77e-05,0.000307
1944,2.77e-05,0.000314
1945,2.77e-05,0.00032
1946,2.77e-05,0.000326
1947,2.77e-05,0.000333
1948,2.77e-05,0.00034
1949,2.7799999999999998e-05,0.000348
1950,2.8e-05,0.000357
1951,2.93e-05,0.000366
1952,3.23e-05,0.000377
1953,3.68e-05,0.000388
1954,4.22e-05,0.00040100000000000004
1955,4.81e-05,0.000414
1956,5.41e-05,0.00042699999999999997
1957,5.96e-05,0.000441
1958,6.44e-05,0.000455
1959,6.78e-05,0.00046899999999999996
1960,6.96e-05,0.000483
1961,7.03e-05,0.000497
1962,7.099999999999999e-05,0.0005110000000000001
1963,7.17e-05,0.0005250000000000001
1964,7.240000000000001e-05,0.000539
1965,7.3e-05,0.000554
1966,7.36e-05,0.0005679999999999999
1967,7.42e-05,0.000583
1968,7.47e-05,0.000598
1969,7.52e-05,0.000614
1970,7.57e-05,0.000657
1971,7.68e-05,0.0006889999999999999
1972,7.929999999999999e-05,0.000726
1973,8.269999999999999e-05,0.000764
1974,8.669999999999999e-05,0.0008
1975,9.1e-05,0.000834
1976,9.54e-05,0.000865
1977,9.94e-05,0.0008950000000000001
1978,0.000103,0.000925
1979,0.00010499999999999999,0.000957
1980,0.000106,0.000994
1981,0.000106,0.0010400000000000001
1982,0.000106,0.00109
1983,0.00010499999999999999,0.00114
1984,0.000104,0.0012
1985,0.000103,0.00125
1986,0.000101,0.00132
1987,0.0001,0.00138
1988,9.900000000000001e-05,0.00145
1989,9.83e-05,0.00151
1990,9.800000000000001e-05,0.00156
1991,9.83e-05,0.0016
1992,9.900000000000001e-05,0.00163
1993,0.0001,0.00165
1994,0.000101,0.0016699999999999998
1995,0.000103,0.0016899999999999999
1996,0.00010499999999999999,0.0017
1997,0.000108,0.00171
1998,0.00011,0.00172
1999,0.00011300000000000001,0.00173
2000,0.000154,0.00173
2001,0.000155,0.0016899999999999999
2002,0.00016,0.00164
2003,0.00016700000000000002,0.00159
2004,0.000175,0.00155
2005,0.000185,0.0015
2006,0.0002,0.0015300000000000001
2007,0.000224,0.00157
2008,0.000255,0.0016
2009,0.00029099999999999997,0.00164
2010,0.00033,0.0016699999999999998
2011,0.000298,0.0016799999999999999
2012,0.000312,0.0016799999999999999
2013,0.00032700000000000003,0.0016899999999999999
2014,0.00034100000000000005,0.0016899999999999999
2015,0.000356,0.0017
2016,0.00037,0.0016899999999999999
2017,0.00038500000000000003,0.0017
2018,0.000399,0.00171