| Year | Value | | 2024 | 138,385 | | 2023 | 141,271 | | 2022 | 142,508 | | 2021 | 142,511 | | 2020 | 141,269 | | 2019 | 138,510 | | 2018 | 132,544 | | 2017 | 124,350 | | 2016 | 116,492 | | 2015 | 108,764 | | 2014 | 101,235 | | 2013 | 96,582 | | 2012 | 94,367 | | 2011 | 91,660 | | 2010 | 88,882 | | 2009 | 86,241 | | 2008 | 83,604 | | 2007 | 81,172 | | 2006 | 79,349 | | 2005 | 78,235 | | 2004 | 77,826 | | 2003 | 78,536 | | 2002 | 80,460 | | 2001 | 83,376 | | 2000 | 86,943 | | 1999 | 90,917 | | 1998 | 94,983 | | 1997 | 98,206 | | 1996 | 98,201 | | 1995 | 94,777 | | 1994 | 89,728 | | 1993 | 83,402 | | 1992 | 76,376 | | 1991 | 71,187 | | 1990 | 68,175 | | 1989 | 65,454 | | 1988 | 63,180 | | 1987 | 61,312 | | 1986 | 59,964 | | 1985 | 58,724 | | 1984 | 58,497 | | 1983 | 59,152 | | 1982 | 58,900 | | 1981 | 57,909 | | 1980 | 56,833 | | 1979 | 54,269 | | 1978 | 50,400 | | 1977 | 47,585 | | 1976 | 45,702 | | 1975 | 44,056 |
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