year,IPC2
1850,0.0
1851,0.0
1852,0.0
1853,0.0
1854,0.0
1855,0.0
1856,0.0
1857,0.0
1858,0.0
1859,0.0
1860,0.0
1861,0.0
1862,0.0
1863,0.0
1864,0.0
1865,0.0
1866,0.0
1867,0.0
1868,0.0
1869,0.0
1870,0.0
1871,0.0
1872,0.0
1873,0.0
1874,0.0
1875,0.0
1876,0.0
1877,0.0
1878,0.0
1879,0.0
1880,0.0
1881,0.0
1882,0.0
1883,0.0
1884,0.0
1885,0.0
1886,0.0
1887,0.0
1888,0.0
1889,0.0
1890,0.0
1891,0.0
1892,0.0
1893,0.0
1894,0.0
1895,0.0
1896,0.0
1897,0.0
1898,0.0
1899,0.0
1900,0.0
1901,0.0
1902,0.0
1903,0.0
1904,0.0
1905,0.0
1906,0.0
1907,0.0
1908,0.0
1909,0.0
1910,0.0
1911,0.0
1912,0.0
1913,0.0
1914,0.0
1915,0.0
1916,0.0
1917,0.0
1918,0.0
1919,0.0
1920,0.0
1921,0.0146
1922,0.0544
1923,0.113
1924,0.184
1925,0.261
1926,0.339
1927,0.41
1928,0.468
1929,0.508
1930,0.523
1931,0.511
1932,0.479
1933,0.431
1934,0.374
1935,0.311
1936,0.249
1937,0.192
1938,0.144
1939,0.112
1940,0.1
1941,0.102
1942,0.108
1943,0.117
1944,0.129
1945,0.143
1946,0.159
1947,0.176
1948,0.194
1949,0.213
1950,0.231
1951,0.25
1952,0.272
1953,0.296
1954,0.323
1955,0.352
1956,0.383
1957,0.417
1958,0.453
1959,0.491
1960,0.532
1961,0.578
1962,0.632
1963,0.694
1964,0.764
1965,0.84
1966,0.923
1967,1.01
1968,1.11
1969,1.21
1970,1.4
1971,1.5
1972,1.54
1973,1.79
1974,1.99
1975,1.77
1976,2.11
1977,2.32
1978,2.52
1979,2.62
1980,2.76
1981,2.82
1982,2.63
1983,3.02
1984,3.15
1985,3.12
1986,3.3
1987,3.41
1988,3.94
1989,4.18
1990,3.62
1991,4.19
1992,3.6
1993,2.35
1994,1.61
1995,1.65
1996,2.85
1997,3.58
1998,3.81
1999,4.74
2000,5.87
2001,7.1
2002,8.22
2003,9.44
2004,10.6
2005,11.8
2006,12.6
2007,13.4
2008,14.3
2009,14.3
2010,15.2
2011,16.1
2012,16.3
2013,16.3
2014,16.3
2015,16.5
2016,16.5
2017,15.4
2018,13.8