| Year | Value | | 2024 | 569,779 | | 2023 | 544,708 | | 2022 | 521,103 | | 2021 | 499,047 | | 2020 | 477,860 | | 2019 | 456,440 | | 2018 | 435,031 | | 2017 | 414,083 | | 2016 | 393,863 | | 2015 | 374,817 | | 2014 | 356,749 | | 2013 | 339,690 | | 2012 | 323,628 | | 2011 | 308,257 | | 2010 | 293,608 | | 2009 | 279,654 | | 2008 | 266,492 | | 2007 | 254,285 | | 2006 | 242,992 | | 2005 | 232,538 | | 2004 | 224,795 | | 2003 | 220,941 | | 2002 | 220,325 | | 2001 | 221,834 | | 2000 | 223,719 | | 1999 | 224,133 | | 1998 | 222,046 | | 1997 | 217,620 | | 1996 | 212,053 | | 1995 | 207,052 | | 1994 | 202,712 | | 1993 | 198,844 | | 1992 | 195,282 | | 1991 | 191,529 | | 1990 | 187,371 | | 1989 | 183,061 | | 1988 | 178,685 | | 1987 | 174,164 | | 1986 | 169,768 | | 1985 | 165,652 | | 1984 | 161,664 | | 1983 | 157,702 | | 1982 | 153,817 | | 1981 | 150,054 | | 1980 | 146,422 | | 1979 | 142,906 | | 1978 | 139,468 | | 1977 | 136,100 | | 1976 | 132,810 | | 1975 | 129,603 |
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