Year | Value | 2016 | 899 | 2015 | 112,392 | 2014 | 60,264 | 2013 | 137,640 | 2012 | 58,314.1 | 2011 | 58,314.1 | 2010 | 53,012.818181818 | 2001 | 46,364 | 2000 | 77,273 | 1999 | 83,900 | 1998 | 90,500 | 1997 | 85,500 | 1996 | 75,100 | 1995 | 74,100 | 1994 | 69,200 | 1993 | 68,200 | 1992 | 66,300 | 1991 | 66,300 | 1990 | 76,300 | 1989 | 74,000 | 1988 | 103,700 | 1987 | 104,100 | 1986 | 108,400 | 1985 | 86,000 | 1984 | 80,400 | 1983 | 79,500 | 1982 | 78,300 | 1981 | 74,800 | 1980 | 61,100 | 1979 | 57,300 | 1978 | 52,200 | 1977 | 45,400 | 1976 | 40,400 | 1975 | 35,000 | 1974 | 31,500 | 1973 | 28,100 | 1972 | 25,900 | 1971 | 31,000 | 1970 | 29,500 |
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