Year | Value | 2023 | 57,557 | 2022 | 57,990 | 2021 | 58,109 | 2020 | 57,821 | 2019 | 57,100 | 2018 | 55,921 | 2017 | 54,415 | 2016 | 52,909 | 2015 | 51,609 | 2014 | 50,547 | 2013 | 49,717 | 2012 | 49,064 | 2011 | 48,446 | 2010 | 47,732 | 2009 | 46,854 | 2008 | 45,840 | 2007 | 44,803 | 2006 | 43,706 | 2005 | 42,767 | 2004 | 42,199 | 2003 | 41,861 | 2002 | 41,327 | 2001 | 40,428 | 2000 | 39,531 | 1999 | 38,662 | 1998 | 37,609 | 1997 | 36,258 | 1996 | 35,051 | 1995 | 34,308 | 1994 | 34,049 | 1993 | 33,441 | 1992 | 34,118 | 1991 | 34,391 | 1990 | 31,548 | 1989 | 28,419 | 1988 | 26,203 | 1987 | 24,439 | 1986 | 22,776 | 1985 | 21,353 | 1984 | 20,208 | 1983 | 19,289 | 1982 | 18,475 | 1981 | 17,615 | 1980 | 16,599 | 1979 | 15,398 | 1978 | 14,062 | 1977 | 12,706 | 1976 | 11,450 | 1975 | 10,362 | 1974 | 9,464 |
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