year,IPC2
1850,
1851,
1852,
1853,
1854,
1855,
1856,
1857,
1858,
1859,
1860,
1861,
1862,
1863,
1864,
1865,
1866,
1867,
1868,
1869,
1870,
1871,
1872,
1873,
1874,
1875,
1876,
1877,
1878,
1879,
1880,
1881,
1882,
1883,
1884,
1885,
1886,
1887,
1888,
1889,
1890,
1891,
1892,
1893,
1894,
1895,
1896,
1897,
1898,
1899,
1900,
1901,
1902,
1903,
1904,
1905,
1906,
1907,
1908,
1909,
1910,
1911,
1912,
1913,
1914,
1915,
1916,
1917,
1918,
1919,
1920,
1921,
1922,
1923,
1924,
1925,
1926,
1927,
1928,
1929,
1930,
1931,
1932,
1933,
1934,
1935,
1936,
1937,
1938,
1939,
1940,
1941,
1942,
1943,
1944,
1945,
1946,
1947,
1948,
1949,
1950,
1951,
1952,
1953,
1954,
1955,
1956,
1957,
1958,
1959,
1960,
1961,
1962,
1963,
1964,
1965,
1966,
1967,
1968,
1969,
1970,
1971,
1972,
1973,
1974,
1975,
1976,
1977,
1978,
1979,
1980,
1981,
1982,
1983,
1984,
1985,
1986,
1987,
1988,
1989,
1990,
1991,
1992,
1993,
1994,
1995,
1996,
1997,
1998,
1999,
2000,
2001,
2002,
2003,
2004,
2005,
2006,
2007,0.0253
2008,0.229
2009,0.274
2010,0.49
2011,0.536
2012,0.537
2013,0.54
2014,0.452
2015,0.478
2016,0.508
2017,0.55
2018,0.557