Year | Value | 2021 | 559,393 | 2020 | 321,437 | 2019 | 597,343 | 2018 | 467,624 | 2017 | 681,691 | 2016 | 359,516 | 2015 | 390,457 | 2014 | 407,544 | 2013 | 396,372 | 2012 | 691,271.96142731 | 2011 | 491,583.03444624 | 2010 | 169,030.94960614 | 2004 | 96,444 | 2003 | 241,111 | 2002 | 255,630 | 2001 | 301,135 | 2000 | 314,335 | 1999 | 304,100 | 1998 | 209,800 | 1997 | 210,600 | 1996 | 197,200 | 1995 | 185,900 | 1994 | 182,500 | 1993 | 152,400 | 1992 | 206,000 | 1991 | 191,700 | 1990 | 188,100 | 1989 | 231,900 | 1988 | 247,800 | 1987 | 224,400 | 1986 | 247,900 | 1985 | 252,600 | 1984 | 261,000 | 1983 | 271,400 | 1982 | 230,000 | 1981 | 288,800 | 1980 | 279,000 | 1979 | 330,400 | 1978 | 309,700 | 1977 | 248,800 | 1976 | 233,500 | 1975 | 153,800 | 1974 | 148,200 | 1973 | 135,600 | 1972 | 131,700 | 1971 | 135,600 | 1970 | 116,700 |
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