| Year | Value | | 2023 | 161,489 | | 2022 | 155,564 | | 2021 | 152,063 | | 2020 | 148,602 | | 2019 | 144,378 | | 2018 | 139,230 | | 2017 | 134,286 | | 2016 | 129,926 | | 2015 | 126,187 | | 2014 | 122,607 | | 2013 | 118,387 | | 2012 | 113,213 | | 2011 | 108,504 | | 2010 | 104,888 | | 2009 | 101,574 | | 2008 | 97,795 | | 2007 | 95,579 | | 2006 | 96,096 | | 2005 | 95,325 | | 2004 | 92,711 | | 2003 | 90,503 | | 2002 | 88,475 | | 2001 | 86,726 | | 2000 | 85,428 | | 1999 | 84,492 | | 1998 | 84,269 | | 1997 | 84,541 | | 1996 | 84,660 | | 1995 | 84,246 | | 1994 | 83,362 | | 1993 | 80,899 | | 1992 | 78,154 | | 1991 | 77,121 | | 1990 | 78,246 | | 1989 | 79,489 | | 1988 | 79,224 | | 1987 | 78,679 | | 1986 | 77,541 | | 1985 | 76,599 | | 1984 | 75,730 | | 1983 | 74,370 | | 1982 | 73,063 | | 1981 | 71,622 | | 1980 | 69,744 | | 1979 | 67,502 | | 1978 | 64,876 | | 1977 | 61,876 | | 1976 | 58,867 | | 1975 | 56,075 | | 1974 | 53,474 |
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