Year Measure
1800 413.8
1801 414
1802 414.2
1803 414.3
1804 414.5
1805 414.7
1806 414.8
1807 415
1808 415.2
1809 415.4
1810 415.5
1811 415.7
1812 415.9
1813 416
1814 416.2
1815 416.4
1816 416.6
1817 416.7
1818 416.9
1819 417.1
1820 417.2
1821 417.4
1822 417.6
1823 417.8
1824 417.9
1825 418.1
1826 418.3
1827 418.4
1828 418.6
1829 418.8
1830 419
1831 419.1
1832 419.3
1833 419.5
1834 419.7
1835 419.8
1836 420
1837 420.2
1838 420.3
1839 420.5
1840 420.7
1841 420.9
1842 421
1843 421.2
1844 421.4
1845 421.6
1846 421.7
1847 421.9
1848 422.1
1849 422.3
1850 422.4
1851 422.6
1852 422.8
1853 422.9
1854 423.1
1855 423.3
1856 423.5
1857 423.6
1858 423.8
1859 424
1860 424.2
1861 424.3
1862 424.5
1863 424.7
1864 424.9
1865 425
1866 425.2
1867 425.4
1868 425.6
1869 425.7
1870 425.9
1871 426.1
1872 426.3
1873 426.4
1874 426.6
1875 426.8
1876 427
1877 427.2
1878 427.3
1879 427.5
1880 427.7
1881 427.9
1882 428
1883 428.2
1884 428.4
1885 428.6
1886 428.7
1887 428.9
1888 429.1
1889 429.3
1890 429.4
1891 429.6
1892 429.8
1893 430
1894 430.2
1895 430.3
1896 430.5
1897 430.7
1898 430.9
1899 431
1900 431.2
1901 431.4
1902 431.6
1903 431.8
1904 431.9
1905 432.1
1906 432.3
1907 432.5
1908 432.6
1909 432.8
1910 433
1911 433.2
1912 433.4
1913 433.5
1914 433.7
1915 433.9
1916 434.1
1917 434.2
1918 434.4
1919 434.6
1920 434.8
1921 435
1922 435.1
1923 435.3
1924 435.5
1925 435.7
1926 435.9
1927 436
1928 436.2
1929 436.4
1930 436.6
1931 436.8
1932 436.9
1933 437.1
1934 437.3
1935 437.5
1936 437.7
1937 437.8
1938 438
1939 438.2
1940 438.4
1941 438.6
1942 438.7
1943 438.9
1944 439.1
1945 439.3
1946 439.5
1947 439.6
1948 439.8
1949 440
1950 440.2
1951 458.3
1952 464.9
1953 476.1
1954 494
1955 501.7
1956 512.1
1957 522.7
1958 533
1959 538.6
1960 567.4
1961 562.5
1962 638.3
1963 696.2
1964 740.2
1965 737.5
1966 736.6
1967 798.6
1968 779.8
1969 772
1970 773.2
1971 686.8
1972 801.6
1973 989.9
1974 1027
1975 920.9
1976 1047
1977 1200
1978 1399
1979 1214
1980 1150
1981 1130
1982 1140
1983 1130
1984 1153
1985 1165
1986 1199
1987 1178
1988 1261
1989 1309
1990 1364
1991 1374
1992 1450
1993 1473
1994 1520
1995 1523
1996 1582
1997 1607
1998 1610
1999 1629
2000 1687
2001 1736
2002 1727
2003 1791
2004 1816
2005 1849
2006 1910
2007 1981
2008 2067
2009 2104
2010 2200
2011 2268
2012 2399
2013 2531
2014 2665
2015 2805
2016 2940
2017 3091
2018 3253
2019 3411