| Year | Value | | 2023 | 304,489 | | 2022 | 296,503 | | 2021 | 284,169 | | 2020 | 268,069 | | 2019 | 248,916 | | 2018 | 228,271 | | 2017 | 208,687 | | 2016 | 191,342 | | 2015 | 176,660 | | 2014 | 164,205 | | 2013 | 152,932 | | 2012 | 141,584 | | 2011 | 129,075 | | 2010 | 115,251 | | 2009 | 101,192 | | 2008 | 87,950 | | 2007 | 79,047 | | 2006 | 77,775 | | 2005 | 84,589 | | 2004 | 98,496 | | 2003 | 115,906 | | 2002 | 132,259 | | 2001 | 144,359 | | 2000 | 150,733 | | 1999 | 151,207 | | 1998 | 147,898 | | 1997 | 142,481 | | 1996 | 135,873 | | 1995 | 131,067 | | 1994 | 130,157 | | 1993 | 130,925 | | 1992 | 130,422 | | 1991 | 128,318 | | 1990 | 124,517 | | 1989 | 118,248 | | 1988 | 110,587 | | 1987 | 102,962 | | 1986 | 96,038 | | 1985 | 90,365 | | 1984 | 85,198 | | 1983 | 80,374 | | 1982 | 76,489 | | 1981 | 73,540 | | 1980 | 71,693 | | 1979 | 71,310 | | 1978 | 71,071 | | 1977 | 70,214 | | 1976 | 68,668 | | 1975 | 67,867 | | 1974 | 68,288 |
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