year,IPC4
1850,8.58e-08
1851,8.669999999999999e-08
1852,8.77e-08
1853,8.859999999999999e-08
1854,8.95e-08
1855,9.04e-08
1856,9.129999999999999e-08
1857,9.22e-08
1858,9.309999999999999e-08
1859,9.4e-08
1860,9.490000000000001e-08
1861,9.57e-08
1862,9.66e-08
1863,9.740000000000001e-08
1864,9.82e-08
1865,9.9e-08
1866,9.98e-08
1867,1.01e-07
1868,1.01e-07
1869,1.02e-07
1870,1.03e-07
1871,1.04e-07
1872,1.05e-07
1873,1.06e-07
1874,1.0700000000000002e-07
1875,1.0800000000000001e-07
1876,1.0900000000000001e-07
1877,1.1e-07
1878,1.1100000000000001e-07
1879,1.1200000000000001e-07
1880,1.1399999999999999e-07
1881,1.1499999999999998e-07
1882,1.17e-07
1883,1.19e-07
1884,1.22e-07
1885,1.24e-07
1886,1.2699999999999999e-07
1887,1.29e-07
1888,1.3200000000000002e-07
1889,1.35e-07
1890,1.3999999999999998e-07
1891,1.44e-07
1892,1.48e-07
1893,1.53e-07
1894,1.57e-07
1895,1.62e-07
1896,1.67e-07
1897,1.72e-07
1898,1.7699999999999998e-07
1899,1.8200000000000002e-07
1900,1.88e-07
1901,1.93e-07
1902,1.9900000000000002e-07
1903,2.05e-07
1904,2.1099999999999997e-07
1905,2.17e-07
1906,2.23e-07
1907,2.2999999999999997e-07
1908,2.36e-07
1909,2.4300000000000005e-07
1910,2.5e-07
1911,2.5699999999999993e-07
1912,2.6400000000000003e-07
1913,2.71e-07
1914,2.79e-07
1915,2.86e-07
1916,2.94e-07
1917,3.0200000000000003e-07
1918,3.1e-07
1919,3.19e-07
1920,3.27e-07
1921,3.36e-07
1922,3.4500000000000003e-07
1923,3.5399999999999997e-07
1924,3.6400000000000003e-07
1925,3.7400000000000004e-07
1926,3.84e-07
1927,3.94e-07
1928,4.04e-07
1929,4.14e-07
1930,4.2499999999999995e-07
1931,4.3499999999999996e-07
1932,4.46e-07
1933,4.5700000000000003e-07
1934,4.6900000000000003e-07
1935,4.8e-07
1936,4.91e-07
1937,5.03e-07
1938,5.15e-07
1939,5.269999999999999e-07
1940,5.389999999999999e-07
1941,5.5e-07
1942,5.62e-07
1943,5.730000000000001e-07
1944,5.85e-07
1945,5.96e-07
1946,6.08e-07
1947,6.210000000000001e-07
1948,6.34e-07
1949,6.490000000000001e-07
1950,6.65e-07
1951,6.82e-07
1952,7.019999999999999e-07
1953,7.240000000000001e-07
1954,7.469999999999999e-07
1955,7.72e-07
1956,7.97e-07
1957,8.230000000000001e-07
1958,8.49e-07
1959,8.75e-07
1960,9.01e-07
1961,9.26e-07
1962,9.52e-07
1963,9.78e-07
1964,1e-06
1965,1.03e-06
1966,1.06e-06
1967,1.09e-06
1968,1.1199999999999999e-06
1969,1.1399999999999999e-06
1970,1.15e-06
1971,1.1399999999999999e-06
1972,1.1300000000000002e-06
1973,1.11e-06
1974,1.1e-06
1975,1.08e-06
1976,1.08e-06
1977,1.08e-06
1978,1.08e-06
1979,1.08e-06
1980,1.08e-06
1981,1.08e-06
1982,1.07e-06
1983,1.06e-06
1984,1.05e-06
1985,1.0400000000000002e-06
1986,1.0400000000000002e-06
1987,1.0400000000000002e-06
1988,1.0400000000000002e-06
1989,1.0400000000000002e-06
1990,1.05e-06
1991,1.0400000000000002e-06
1992,1.0400000000000002e-06
1993,1.0400000000000002e-06
1994,1.03e-06
1995,1.03e-06
1996,1.03e-06
1997,1.03e-06
1998,1.03e-06
1999,1.0400000000000002e-06
2000,1.03e-06
2001,1.03e-06
2002,1.03e-06
2003,1.03e-06
2004,1.03e-06
2005,1.03e-06
2006,1.03e-06
2007,1.03e-06
2008,1.0199999999999998e-06
2009,1.0199999999999998e-06
2010,1.0199999999999998e-06
2011,1.0199999999999998e-06
2012,1.0199999999999998e-06
2013,1.0199999999999998e-06
2014,1.0199999999999998e-06
2015,1.0199999999999998e-06
2016,1.0199999999999998e-06
2017,1.0199999999999998e-06