plain text svg graphic This svg graphic is to edit with an text editor. Please do not overwrite this file by saving with an image editor. ---------------- All values are scaled by 100. This is necessary to keep the lines from turning into ribbons. 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 1500 2000 2500 3000 3500
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