Year | Value | 2021 | 569,309 | 2020 | 322,841 | 2019 | 748,540 | 2018 | 825,257 | 2017 | 808,471 | 2016 | 667,062 | 2015 | 642,893 | 2014 | 237,120 | 2013 | 234,996 | 2012 | 39,485.472201926 | 2011 | 89,791.867766357 | 2010 | 516,085 | 2001 | 46,364 | 2000 | 107,979 | 1999 | 259,600 | 1998 | 162,400 | 1997 | 157,600 | 1996 | 178,700 | 1995 | 174,700 | 1994 | 156,900 | 1993 | 186,200 | 1992 | 195,100 | 1991 | 177,700 | 1990 | 200,200 | 1989 | 218,200 | 1988 | 190,700 | 1987 | 183,400 | 1986 | 184,900 | 1985 | 182,700 | 1984 | 397,700 | 1983 | 388,500 | 1982 | 382,300 | 1981 | 379,100 | 1980 | 151,100 | 1979 | 137,300 | 1978 | 132,200 | 1977 | 120,400 | 1976 | 113,700 | 1975 | 95,000 | 1974 | 56,500 | 1973 | 51,600 | 1972 | 47,900 | 1971 | 51,000 | 1970 | 108,700 |
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