Year Measure
1764 614.5
1765 614.4
1766 614.2
1767 614
1768 613.9
1769 613.7
1770 613.6
1771 613.4
1772 613.2
1773 613.1
1774 612.9
1775 612.8
1776 612.6
1777 612.4
1778 612.3
1779 612.1
1780 612
1781 611.8
1782 611.7
1783 611.5
1784 611.3
1785 611.2
1786 611
1787 610.9
1788 610.7
1789 610.5
1790 610.4
1791 610.2
1792 610.1
1793 609.9
1794 609.7
1795 609.6
1796 609.4
1797 609.3
1798 609.1
1799 609
1800 608.8
1801 608.6
1802 608.5
1803 608.3
1804 608.2
1805 608
1806 607.8
1807 607.7
1808 607.5
1809 607.4
1810 607.2
1811 607.1
1812 606.9
1813 606.7
1814 606.6
1815 606.4
1816 606.3
1817 606.1
1818 606
1819 605.8
1820 605.6
1821 605.6
1822 605.6
1823 605.6
1824 605.6
1825 605.6
1826 605.6
1827 605.6
1828 605.6
1829 605.6
1830 605.6
1831 605.6
1832 605.6
1833 605.6
1834 605.6
1835 605.6
1836 605.6
1837 605.6
1838 605.6
1839 605.6
1840 605.6
1841 605.6
1842 605.6
1843 605.6
1844 605.5
1845 605.5
1846 605.5
1847 605.5
1848 605.5
1849 605.5
1850 605.5
1851 605.5
1852 605.5
1853 605.5
1854 605.6
1855 605.6
1856 605.6
1857 605.6
1858 605.6
1859 605.6
1860 605.6
1861 605.6
1862 605.6
1863 605.6
1864 605.6
1865 605.6
1866 605.6
1867 605.7
1868 605.7
1869 605.7
1870 605.7
1871 607.1
1872 608.5
1873 609.9
1874 611.3
1875 612.7
1876 614.1
1877 615.5
1878 616.9
1879 618.3
1880 619.7
1881 621.1
1882 622.6
1883 624
1884 625.4
1885 643.8
1886 622.3
1887 649.5
1888 654.2
1889 635.3
1890 663.6
1891 601.5
1892 648.7
1893 664
1894 673
1895 655.3
1896 605.9
1897 715.4
1898 715.7
1899 658.8
1900 680.7
1901 690.5
1902 743.6
1903 749.6
1904 748.5
1905 730.5
1906 746.8
1907 697.3
1908 703
1909 794.8
1910 791.4
1911 784.7
1912 782.4
1913 764
1914 805
1915 784.7
1916 806.8
1917 791.5
1918 689.6
1919 784.2
1920 721.4
1921 771.9
1922 796.4
1923 762.6
1924 791.9
1925 793.3
1926 809.9
1927 802
1928 802
1929 826.8
1930 824.4
1931 807.9
1932 805.6
1933 795.1
1934 791.4
1935 773
1936 791.9
1937 768.1
1938 759.3
1939 765.3
1940 779.7
1941 784.6
1942 771.9
1943 793.2
1944 775.7
1945 754.3
1946 706.4
1947 701.6
1948 700.9
1949 709.3
1950 673.4
1951 675.3
1952 684.2
1953 682.7
1954 682.5
1955 633.5
1956 687.9
1957 661.6
1958 636
1959 656.3
1960 679.4
1961 703.5
1962 686.3
1963 741
1964 734.1
1965 758.1
1966 752.6
1967 721.2
1968 772.1
1969 766.7
1970 785.1
1971 731.1
1972 630.2
1973 619.9
1974 682.1
1975 659.7
1976 674.2
1977 659.9
1978 687.1
1979 698.5
1980 683.5
1981 686.6
1982 677
1983 693
1984 713.9
1985 719.6
1986 735.9
1987 752
1988 759
1989 763.5
1990 798.6
1991 810.2
1992 837.8
1993 862.9
1994 884.1
1995 912.8
1996 939.2
1997 972.8
1998 1005
1999 1035
2000 1075
2001 1110
2002 1136
2003 1172
2004 1221
2005 1268
2006 1334
2007 1402
2008 1470
2009 1541
2010 1621
2011 1708
2012 1793
2013 1880
2014 1979
2015 2087
2016 2205
2017 2334
2018 2474