year,IPC2,IPC4
1850,0.0,2.14e-06
1851,0.0,2.17e-06
1852,0.0,2.1899999999999998e-06
1853,0.0,2.21e-06
1854,0.0,2.2399999999999997e-06
1855,0.0,2.2600000000000004e-06
1856,0.0,2.2799999999999998e-06
1857,0.0,2.31e-06
1858,0.0,2.33e-06
1859,0.0,2.35e-06
1860,0.0,2.37e-06
1861,0.0,2.3899999999999996e-06
1862,0.0,2.4100000000000002e-06
1863,0.0,2.43e-06
1864,0.0,2.45e-06
1865,0.0,2.47e-06
1866,0.0,2.49e-06
1867,0.0,2.51e-06
1868,0.0,2.54e-06
1869,0.0,2.56e-06
1870,0.0,2.5800000000000003e-06
1871,0.0,2.5999999999999997e-06
1872,0.0,2.62e-06
1873,0.0,2.65e-06
1874,0.0,2.6700000000000003e-06
1875,0.0,2.6899999999999997e-06
1876,0.0,2.72e-06
1877,0.0,2.75e-06
1878,0.0,2.7699999999999997e-06
1879,0.0,2.81e-06
1880,0.0,2.8399999999999995e-06
1881,0.0,2.8800000000000004e-06
1882,0.0,2.93e-06
1883,0.0,2.98e-06
1884,0.0,3.0399999999999997e-06
1885,0.0,3.1e-06
1886,0.0,3.17e-06
1887,0.0,3.24e-06
1888,0.0,3.3e-06
1889,0.0,3.36e-06
1890,0.0,3.49e-06
1891,0.0,3.6e-06
1892,0.0,3.7e-06
1893,0.0,3.820000000000001e-06
1894,0.0,3.93e-06
1895,0.0,4.05e-06
1896,0.0,4.18e-06
1897,0.0,4.3e-06
1898,0.0,4.43e-06
1899,0.0,4.5599999999999995e-06
1900,0.0,4.7e-06
1901,0.0,4.83e-06
1902,0.0,4.98e-06
1903,0.0,5.12e-06
1904,0.0,5.27e-06
1905,0.0,5.43e-06
1906,0.0,5.59e-06
1907,0.0,5.75e-06
1908,0.0,5.91e-06
1909,0.0,6.079999999999999e-06
1910,0.0,6.25e-06
1911,0.0,6.43e-06
1912,0.0,6.6e-06
1913,0.0,6.790000000000001e-06
1914,0.0,6.97e-06
1915,0.0,7.16e-06
1916,0.0,7.359999999999999e-06
1917,0.0,7.559999999999999e-06
1918,0.0,7.76e-06
1919,0.0,7.97e-06
1920,0.0,8.18e-06
1921,0.0,8.4e-06
1922,0.0,8.63e-06
1923,0.0,8.86e-06
1924,0.0,9.100000000000001e-06
1925,0.0,9.34e-06
1926,0.0,9.590000000000001e-06
1927,0.0,9.839999999999999e-06
1928,0.0,1.01e-05
1929,0.0,1.0399999999999999e-05
1930,0.0,1.06e-05
1931,4.0700000000000004e-10,1.09e-05
1932,1.54e-09,1.12e-05
1933,3.28e-09,1.1400000000000001e-05
1934,5.48e-09,1.17e-05
1935,8.03e-09,1.2e-05
1936,1.0800000000000002e-08,1.23e-05
1937,1.3600000000000001e-08,1.26e-05
1938,1.6399999999999998e-08,1.29e-05
1939,1.91e-08,1.32e-05
1940,2.14e-08,1.35e-05
1941,2.37e-08,1.38e-05
1942,2.6100000000000002e-08,1.4e-05
1943,2.8699999999999996e-08,1.43e-05
1944,3.12e-08,1.46e-05
1945,3.37e-08,1.49e-05
1946,3.61e-08,1.52e-05
1947,3.83e-08,1.55e-05
1948,4.02e-08,1.59e-05
1949,4.17e-08,1.62e-05
1950,4.28e-08,1.66e-05
1951,4.36e-08,1.7100000000000002e-05
1952,4.4100000000000004e-08,1.76e-05
1953,4.46e-08,1.8100000000000003e-05
1954,4.49e-08,1.87e-05
1955,4.5299999999999995e-08,1.93e-05
1956,4.5600000000000005e-08,1.9900000000000003e-05
1957,4.6e-08,2.06e-05
1958,4.66e-08,2.12e-05
1959,4.72e-08,2.19e-05
1960,4.81e-08,2.2499999999999998e-05
1961,5.19e-08,2.3199999999999998e-05
1962,6.04e-08,2.3800000000000003e-05
1963,7.25e-08,2.4500000000000003e-05
1964,8.68e-08,2.51e-05
1965,1.02e-07,2.58e-05
1966,1.18e-07,2.65e-05
1967,1.3200000000000002e-07,2.7199999999999997e-05
1968,1.43e-07,2.79e-05
1969,1.5100000000000002e-07,2.86e-05
1970,1.45e-07,2.87e-05
1971,1.38e-07,2.86e-05
1972,1.3200000000000002e-07,2.83e-05
1973,1.24e-07,2.79e-05
1974,1.17e-07,2.75e-05
1975,1.1100000000000001e-07,2.7099999999999998e-05
1976,1.0800000000000001e-07,2.7e-05
1977,1.05e-07,2.69e-05
1978,1.05e-07,2.7e-05
1979,1.01e-07,2.7099999999999998e-05
1980,1.01e-07,2.7099999999999998e-05
1981,1.01e-07,2.69e-05
1982,9.98e-08,2.68e-05
1983,9.98e-08,2.65e-05
1984,9.98e-08,2.63e-05
1985,9.98e-08,2.61e-05
1986,9.98e-08,2.61e-05
1987,1.01e-07,2.6e-05
1988,1.03e-07,2.61e-05
1989,1.05e-07,2.6e-05
1990,1.05e-07,2.61e-05
1991,1.04e-07,2.61e-05
1992,1.05e-07,2.59e-05
1993,1.05e-07,2.59e-05
1994,1.05e-07,2.58e-05
1995,1.04e-07,2.58e-05
1996,1.03e-07,2.58e-05
1997,1.02e-07,2.58e-05
1998,1.03e-07,2.59e-05
1999,1.02e-07,2.59e-05
2000,1.01e-07,2.58e-05
2001,9.85e-08,2.58e-05
2002,9.56e-08,2.58e-05
2003,9.14e-08,2.59e-05
2004,8.859999999999999e-08,2.58e-05
2005,8.590000000000001e-08,2.58e-05
2006,8.53e-08,2.57e-05
2007,8.5e-08,2.5600000000000002e-05
2008,8.47e-08,2.5600000000000002e-05
2009,8.430000000000001e-08,2.55e-05
2010,8.39e-08,2.55e-05
2011,7.92e-08,2.5600000000000002e-05
2012,7.75e-08,2.55e-05
2013,7.58e-08,2.55e-05
2014,7.41e-08,2.55e-05
2015,7.240000000000001e-08,2.55e-05
2016,7.06e-08,2.5399999999999997e-05
2017,6.89e-08,2.5399999999999997e-05