Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through April 2013.
Move mouse towards an axis until highlighted. Left-click mouse to pan. Shift key + left-click to zoom.
| 1895 | 1896 | 1897 | 1898 | 1899 | 1900 | 1901 | 1902 | 1903 | 1904 | 1905 | 1906 | 1907 | 1908 | 1909 | 1910 | 1911 | 1912 | 1913 | 1914 | 1915 | 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 | 1923 | 1924 | 1925 | 1926 | 1927 | 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 | 1950 | 1951 | 1952 | 1953 | 1954 | 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 27.07" | 34.59" | 27.82" | 41.68" | 30.82" | 35.39" | 35.84" | 33.93" | 34.59" | 33.56" | 29.61" | 34.63" | 31.92" | 28.83" | 30.79" | 26.15" | 30.08" | 27.79" | 32.61" | 26.79" | 32.28" | 32.22" | 32.90" | 28.54" | 33.83" | 34.85" | 29.36" | 36.24" | 28.68" | 27.81" | 31.44" | 29.66" | 33.34" | 34.58" | 30.60" | 25.14" | 38.36" | 37.60" | 43.57" | 37.36" | 32.77" | 40.35" | 38.12" | 47.06" | 33.29" | 34.08" | 25.83" | 35.81" | 33.39" | 31.97" | 37.48" | 35.91" | 32.46" | 36.13" | 29.97" | 30.27" | 37.19" | 36.04" | 43.38" | 42.46" | 44.85" | 35.65" | 22.92" | 43.54" | 37.55" | 38.60" | 35.94" | 35.63" | 27.91" | 27.51" | 24.27" | 29.84" | 36.72" | 31.55" | 33.56" | 32.95" | 31.63" | 45.28" | 41.26" | 37.61" | 45.08" | 37.70" | 43.88" | 35.36" | 47.93" | 30.43" | 33.13" | 40.27" | 45.59" | 44.61" | 32.58" | 36.24" | 40.05" | 33.29" | 44.14" | 44.17" | 39.61" | 33.81" | 34.82" | 38.72" | 32.72" | 51.57" | 31.08" | 47.75" | 41.19" | 42.73" | 36.97" | 36.24" | 44.27" | 39.93" | 49.21" | 46.76" | 36.75" | 50.38" | 44.39" | 43.72" | 53.44" | 36.35" |
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