| Year | Value | | 2024 | 260,917 | | 2023 | 242,953 | | 2022 | 226,107 | | 2021 | 209,768 | | 2020 | 194,193 | | 2019 | 180,427 | | 2018 | 169,182 | | 2017 | 161,039 | | 2016 | 156,181 | | 2015 | 154,223 | | 2014 | 154,589 | | 2013 | 156,616 | | 2012 | 158,854 | | 2011 | 161,592 | | 2010 | 165,558 | | 2009 | 169,871 | | 2008 | 173,919 | | 2007 | 177,077 | | 2006 | 179,654 | | 2005 | 180,868 | | 2004 | 180,126 | | 2003 | 175,094 | | 2002 | 167,420 | | 2001 | 161,196 | | 2000 | 154,877 | | 1999 | 148,299 | | 1998 | 146,345 | | 1997 | 147,378 | | 1996 | 146,120 | | 1995 | 143,196 | | 1994 | 138,854 | | 1993 | 133,506 | | 1992 | 126,494 | | 1991 | 120,223 | | 1990 | 116,124 | | 1989 | 112,309 | | 1988 | 108,807 | | 1987 | 105,274 | | 1986 | 101,969 | | 1985 | 99,095 | | 1984 | 96,386 | | 1983 | 93,947 | | 1982 | 91,797 | | 1981 | 89,670 | | 1980 | 88,045 | | 1979 | 86,954 | | 1978 | 85,065 | | 1977 | 82,340 | | 1976 | 79,897 | | 1975 | 78,366 |
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