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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 27.26" | 22.77" | 25.09" | 30.12" | 24.14" | 34.79" | 21.56" | 27.30" | 30.05" | 27.11" | 35.49" | 28.69" | 26.09" | 32.75" | 23.27" | 21.83" | 25.11" | 26.32" | 27.39" | 26.82" | 32.79" | 24.70" | 21.11" | 21.24" | 32.40" | 29.79" | 28.03" | 30.44" | 32.66" | 23.09" | 21.50" | 28.72" | 30.29" | 27.27" | 27.73" | 23.19" | 23.30" | 30.63" | 26.25" | 23.15" | 31.73" | 23.01" | 24.36" | 28.04" | 25.38" | 27.71" | 33.21" | 29.78" | 22.58" | 31.90" | 33.49" | 31.42" | 24.95" | 25.74" | 33.14" | 32.80" | 28.09" | 21.57" | 25.07" | 18.35" | 26.64" | 18.41" | 35.39" | 33.17" | 27.84" | 26.06" | 31.58" | 25.30" | 19.76" | 26.57" | 27.15" | 27.74" | 25.99" | 30.74" | 26.49" | 25.30" | 25.47" | 24.85" | 36.99" | 30.80" | 31.45" | 25.62" | 27.20" | 25.27" | 34.47" | 26.28" | 27.39" | 26.21" | 27.13" | 23.00" | 28.42" | 26.12" | 29.90" | 23.48" | 31.76" | 32.71" | 33.92" | 32.00" | 30.33" | 26.69" | 30.21" | 26.65" | 32.04" | 26.49" | 27.08" | 22.21" | 29.30" | 26.32" | 26.08" | 32.66" | 26.06" | 23.39" | 33.97" | 30.48" | 28.80" | 28.40" | 18.32" | 27.22" |
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