year,IPC1,IPC4
1850,0.000508,0.00174
1851,0.000519,0.00173
1852,0.000531,0.00173
1853,0.000544,0.00172
1854,0.000558,0.00172
1855,0.0005719999999999999,0.00172
1856,0.000587,0.00171
1857,0.000602,0.00171
1858,0.000617,0.00171
1859,0.000633,0.00171
1860,0.00065,0.00171
1861,0.000666,0.00171
1862,0.000684,0.0017
1863,0.0007019999999999999,0.0017
1864,0.000721,0.0017
1865,0.00074,0.0017
1866,0.000761,0.0017
1867,0.000782,0.0017
1868,0.000804,0.0017
1869,0.0008269999999999999,0.0017
1870,0.000851,0.0017
1871,0.000877,0.00171
1872,0.000905,0.00171
1873,0.0009360000000000001,0.00172
1874,0.000968,0.00173
1875,0.001,0.00174
1876,0.0010400000000000001,0.00176
1877,0.00107,0.00177
1878,0.00111,0.0017800000000000001
1879,0.00115,0.0017900000000000001
1880,0.0011799999999999998,0.0018
1881,0.00122,0.00181
1882,0.00126,0.00182
1883,0.0012900000000000001,0.00183
1884,0.00133,0.00184
1885,0.0013700000000000001,0.00186
1886,0.00141,0.0018700000000000001
1887,0.00146,0.00188
1888,0.0015,0.00189
1889,0.00155,0.0019
1890,0.00166,0.00199
1891,0.0017,0.0020499999999999997
1892,0.00176,0.00211
1893,0.00181,0.00217
1894,0.0018700000000000001,0.0022400000000000002
1895,0.0019299999999999999,0.0023
1896,0.002,0.00237
1897,0.00207,0.00244
1898,0.00214,0.0025099999999999996
1899,0.00221,0.0025800000000000003
1900,0.00229,0.00265
1901,0.00237,0.00273
1902,0.0024700000000000004,0.00281
1903,0.00257,0.00289
1904,0.00268,0.00297
1905,0.0028,0.0030600000000000002
1906,0.0029100000000000003,0.00315
1907,0.00302,0.00323
1908,0.00312,0.00333
1909,0.00321,0.00342
1910,0.00328,0.0035099999999999997
1911,0.00335,0.00361
1912,0.00342,0.0037099999999999998
1913,0.00349,0.00381
1914,0.0035499999999999998,0.00391
1915,0.00361,0.004019999999999999
1916,0.00367,0.00412
1917,0.0037099999999999998,0.00423
1918,0.00375,0.00434
1919,0.00378,0.0044599999999999996
1920,0.00379,0.00458
1921,0.00379,0.0047
1922,0.00378,0.0048200000000000005
1923,0.00377,0.00495
1924,0.00375,0.00508
1925,0.00373,0.00521
1926,0.0037,0.00535
1927,0.00369,0.00549
1928,0.00367,0.00563
1929,0.00366,0.00577
1930,0.00367,0.00591
1931,0.00369,0.006059999999999999
1932,0.00375,0.0062
1933,0.0038399999999999997,0.00635
1934,0.00394,0.00651
1935,0.004070000000000001,0.00666
1936,0.004200000000000001,0.0068200000000000005
1937,0.00435,0.00698
1938,0.0045,0.00714
1939,0.00464,0.0073
1940,0.00478,0.00746
1941,0.0049299999999999995,0.00763
1942,0.00508,0.0078
1943,0.00526,0.00797
1944,0.00544,0.008150000000000001
1945,0.00564,0.00833
1946,0.005849999999999999,0.00852
1947,0.00607,0.00872
1948,0.0063,0.00893
1949,0.00654,0.00915
1950,0.00679,0.00937
1951,0.00708,0.00962
1952,0.00744,0.0099
1953,0.00786,0.010199999999999999
1954,0.00831,0.0105
1955,0.0088,0.0109
1956,0.009300000000000001,0.0112
1957,0.009789999999999998,0.0116
1958,0.0103,0.0119
1959,0.0107,0.0123
1960,0.0111,0.0126
1961,0.0115,0.013
1962,0.0119,0.0134
1963,0.0124,0.013800000000000002
1964,0.0128,0.0141
1965,0.0159,0.0145
1966,0.0169,0.0149
1967,0.0169,0.015300000000000001
1968,0.0182,0.0158
1969,0.0202,0.0162
1970,0.0224,0.0173
1971,0.02,0.0181
1972,0.025,0.019
1973,0.0255,0.02
1974,0.0261,0.0209
1975,0.027100000000000003,0.0218
1976,0.0292,0.022600000000000002
1977,0.0315,0.0233
1978,0.0356,0.0241
1979,0.038799999999999994,0.0249
1980,0.0405,0.0259
1981,0.042,0.027
1982,0.0445,0.0282
1983,0.044700000000000004,0.0295
1984,0.0451,0.030899999999999997
1985,0.0461,0.0324
1986,0.044700000000000004,0.034
1987,0.041100000000000005,0.0357
1988,0.0396,0.0373
1989,0.038799999999999994,0.038799999999999994
1990,0.060200000000000004,0.04
1991,0.0631,0.041
1992,0.060899999999999996,0.0418
1993,0.0686,0.0424
1994,0.0725,0.0428
1995,0.0725,0.0432
1996,0.0726,0.0436
1997,0.0726,0.0439
1998,0.07659999999999999,0.0441
1999,0.0728,0.0442
2000,0.0856,0.0444
2001,0.09129999999999999,0.0433
2002,0.09720000000000001,0.0421
2003,0.0993,0.0409
2004,0.106,0.039700000000000006
2005,0.103,0.0385
2006,0.113,0.0394
2007,0.124,0.0402
2008,0.126,0.041100000000000005
2009,0.133,0.042
2010,0.135,0.043
2011,0.134,0.043
2012,0.134,0.0431
2013,0.135,0.0433
2014,0.151,0.0434
2015,0.16,0.0435
2016,0.174,0.0434
2017,0.179,0.0436
2018,0.25,0.0438