| Year | Value | | 2021 | 41,126 | | 2020 | 443,067 | | 2019 | 832,828 | | 2018 | 1,022,645 | | 2017 | 1,133,069 | | 2016 | 1,092,333 | | 2015 | 1,063,498 | | 2014 | 1,060,147 | | 2013 | 1,013,220 | | 2012 | 973,062 | | 2011 | 932,868 | | 2010 | 801,840 | | 2009 | 798,165 | | 2008 | 1,073,496 | | 2007 | 855,229 | | 2006 | 808,451 | | 2005 | 653,703 | | 2004 | 476,277 | | 2003 | 310,952 | | 2002 | 62,798 | | 2001 | 233,963 | | 2000 | 535,246 | | 1999 | 734,700 | | 1998 | 827,700 | | 1997 | 721,700 | | 1996 | 718,200 | | 1995 | 862,700 | | 1994 | 789,200 | | 1993 | 915,800 | | 1992 | 814,000 | | 1991 | 645,700 | | 1990 | 1,907,000 | | 1989 | 1,997,700 | | 1988 | 2,163,600 | | 1987 | 2,095,000 | | 1986 | 1,965,300 | | 1985 | 2,090,000 | | 1984 | 1,950,000 | | 1983 | 1,790,000 | | 1982 | 1,675,000 | | 1981 | 1,787,000 | | 1980 | 1,787,500 | | 1979 | 1,755,000 | | 1978 | 1,500,000 | | 1977 | 1,400,000 | | 1976 | 1,370,000 | | 1975 | 1,150,000 | | 1974 | 1,130,000 | | 1973 | 1,085,000 | | 1972 | 1,025,000 | | 1971 | 985,200 | | 1970 | 988,900 |
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