Year | Value | 2023 | 56,453 | 2022 | 56,662 | 2021 | 57,039 | 2020 | 58,296 | 2019 | 60,062 | 2018 | 60,091 | 2017 | 58,216 | 2016 | 56,345 | 2015 | 54,998 | 2014 | 53,244 | 2013 | 50,831 | 2012 | 48,878 | 2011 | 48,445 | 2010 | 48,701 | 2009 | 46,617 | 2008 | 42,689 | 2007 | 39,234 | 2006 | 36,361 | 2005 | 34,120 | 2004 | 32,447 | 2003 | 31,193 | 2002 | 30,149 | 2001 | 29,169 | 2000 | 28,241 | 1999 | 27,367 | 1998 | 26,530 | 1997 | 25,706 | 1996 | 24,879 | 1995 | 24,068 | 1994 | 23,291 | 1993 | 22,525 | 1992 | 21,746 | 1991 | 20,921 | 1990 | 19,738 | 1989 | 18,236 | 1988 | 16,775 | 1987 | 15,403 | 1986 | 14,142 | 1985 | 13,001 | 1984 | 11,986 | 1983 | 11,102 | 1982 | 10,344 | 1981 | 9,671 | 1980 | 8,996 | 1979 | 8,348 | 1978 | 7,808 | 1977 | 7,364 | 1976 | 6,999 | 1975 | 6,694 | 1974 | 6,430 |
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