year,IPC1
1850,3.48e-05
1851,3.66e-05
1852,3.86e-05
1853,4.07e-05
1854,4.29e-05
1855,4.53e-05
1856,4.78e-05
1857,5.0299999999999996e-05
1858,5.3e-05
1859,5.58e-05
1860,5.86e-05
1861,6.15e-05
1862,6.46e-05
1863,6.79e-05
1864,7.12e-05
1865,7.48e-05
1866,7.85e-05
1867,8.23e-05
1868,8.63e-05
1869,9.049999999999999e-05
1870,9.48e-05
1871,9.94e-05
1872,0.000104
1873,0.00011
1874,0.000115
1875,0.000121
1876,0.000127
1877,0.000133
1878,0.00013900000000000002
1879,0.000145
1880,0.000152
1881,0.00015900000000000002
1882,0.000165
1883,0.00017199999999999998
1884,0.00017999999999999998
1885,0.000187
1886,0.000195
1887,0.000203
1888,0.000211
1889,0.00022
1890,0.000241
1891,0.00025
1892,0.00026000000000000003
1893,0.00027
1894,0.00028100000000000005
1895,0.00029299999999999997
1896,0.000305
1897,0.00031800000000000003
1898,0.000331
1899,0.000345
1900,0.000359
1901,0.000375
1902,0.000393
1903,0.00041299999999999996
1904,0.000434
1905,0.000455
1906,0.00047599999999999997
1907,0.000496
1908,0.000514
1909,0.00053
1910,0.000544
1911,0.0005560000000000001
1912,0.0005679999999999999
1913,0.00058
1914,0.000592
1915,0.000603
1916,0.000612
1917,0.00062
1918,0.000627
1919,0.00063
1920,0.000632
1921,0.000631
1922,0.000628
1923,0.000624
1924,0.000618
1925,0.0006129999999999999
1926,0.000607
1927,0.000602
1928,0.000597
1929,0.000594
1930,0.000593
1931,0.000597
1932,0.000606
1933,0.00062
1934,0.000638
1935,0.00066
1936,0.000684
1937,0.0007099999999999999
1938,0.000737
1939,0.0007650000000000001
1940,0.000791
1941,0.0008179999999999999
1942,0.000848
1943,0.00088
1944,0.000914
1945,0.0009509999999999999
1946,0.00099
1947,0.00103
1948,0.00107
1949,0.0011200000000000001
1950,0.00116
1951,0.00121
1952,0.00127
1953,0.00133
1954,0.00139
1955,0.00146
1956,0.0015300000000000001
1957,0.0016
1958,0.0016699999999999998
1959,0.00174
1960,0.00181
1961,0.00189
1962,0.00196
1963,0.00204
1964,0.00213
1965,0.00185
1966,0.00198
1967,0.00198
1968,0.00216
1969,0.00242
1970,0.00271
1971,0.0022
1972,0.0022
1973,0.0022
1974,0.0022
1975,0.0022
1976,0.0022
1977,0.0022
1978,0.0022
1979,0.0022
1980,0.0022
1981,0.0022
1982,0.0022
1983,0.0022
1984,0.0022
1985,0.0022
1986,0.0022
1987,0.0022
1988,0.0022
1989,0.0022
1990,0.0044
1991,0.0044
1992,0.0044
1993,0.0044
1994,0.0044
1995,0.00447
1996,0.00454
1997,0.00461
1998,0.00468
1999,0.00475
2000,0.0048200000000000005
2001,0.00497
2002,0.00511
2003,0.00525
2004,0.0054
2005,0.00554
2006,0.0067
2007,0.0081
2008,0.00484
2009,0.00505
2010,0.00505
2011,0.0101
2012,0.0101
2013,0.0101
2014,0.0152
2015,0.0162
2016,0.0176
2017,0.0181
2018,0.0257