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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.15" | 33.94" | 28.74" | 33.97" | 27.05" | 25.39" | 25.42" | 28.24" | 29.48" | 30.53" | 31.34" | 27.80" | 35.68" | 29.88" | 35.19" | 27.68" | 30.93" | 32.05" | 36.32" | 26.44" | 31.93" | 30.01" | 29.73" | 28.06" | 27.87" | 30.39" | 31.64" | 30.22" | 28.98" | 32.11" | 24.78" | 33.93" | 31.58" | 27.45" | 34.53" | 22.57" | 29.08" | 26.92" | 32.52" | 22.73" | 33.18" | 24.26" | 36.81" | 34.09" | 31.91" | 29.86" | 23.18" | 29.14" | 31.43" | 26.70" | 36.12" | 27.09" | 35.00" | 32.37" | 31.27" | 38.04" | 29.75" | 29.90" | 24.72" | 26.98" | 28.29" | 34.68" | 30.04" | 34.11" | 30.31" | 24.77" | 32.98" | 26.03" | 23.76" | 30.78" | 29.93" | 27.21" | 26.26" | 29.75" | 29.03" | 29.06" | 26.26" | 32.03" | 31.35" | 32.60" | 34.84" | 29.13" | 29.42" | 27.99" | 36.94" | 33.95" | 32.59" | 28.08" | 26.64" | 26.96" | 26.13" | 28.67" | 24.85" | 23.17" | 36.18" | 37.21" | 24.77" | 31.97" | 29.29" | 29.11" | 29.91" | 37.54" | 32.23" | 33.57" | 26.18" | 33.69" | 27.41" | 30.40" | 38.30" | 36.67" | 33.01" | 32.97" | 31.01" | 36.25" | 28.76" | 28.92" | 41.81" | 26.77" |
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