Year | Value | 2021 | 293,982.859 | 2020 | 168,010.186 | 2019 | 560,422.19 | 2018 | 577,408 | 2017 | 595,624 | 2016 | 649,749 | 2015 | 667,747 | 2014 | 686,943 | 2013 | 696,120 | 2012 | 663,141 | 2011 | 638,729 | 2010 | 584,145 | 2004 | 190,315 | 2003 | 183,532 | 2002 | 198,291 | 2001 | 233,803 | 2000 | 247,707 | 1999 | 236,300 | 1998 | 223,400 | 1997 | 207,400 | 1996 | 183,500 | 1995 | 170,600 | 1994 | 195,100 | 1993 | 183,200 | 1992 | 186,700 | 1991 | 178,100 | 1990 | 208,000 | 1989 | 203,000 | 1988 | 189,700 | 1987 | 180,200 | 1986 | 173,100 | 1985 | 150,300 | 1984 | 152,000 | 1983 | 140,100 | 1982 | 127,700 | 1981 | 123,400 | 1980 | 117,100 | 1979 | 103,700 | 1978 | 99,800 | 1977 | 100,800 | 1976 | 113,800 | 1975 | 98,800 | 1974 | 103,900 | 1973 | 102,700 | 1972 | 104,200 | 1971 | 99,100 | 1970 | 92,000 |
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