| Year | Value | | 2024 | 429,445 | | 2023 | 427,130 | | 2022 | 425,065 | | 2021 | 423,948 | | 2020 | 422,873 | | 2019 | 420,865 | | 2018 | 418,542 | | 2017 | 416,134 | | 2016 | 413,615 | | 2015 | 411,058 | | 2014 | 408,371 | | 2013 | 405,534 | | 2012 | 402,704 | | 2011 | 399,949 | | 2010 | 397,301 | | 2009 | 394,521 | | 2008 | 391,621 | | 2007 | 388,857 | | 2006 | 386,254 | | 2005 | 383,698 | | 2004 | 381,058 | | 2003 | 376,961 | | 2002 | 369,361 | | 2001 | 361,755 | | 2000 | 354,162 | | 1999 | 348,560 | | 1998 | 343,256 | | 1997 | 337,985 | | 1996 | 332,459 | | 1995 | 326,440 | | 1994 | 319,860 | | 1993 | 312,816 | | 1992 | 305,585 | | 1991 | 298,483 | | 1990 | 291,283 | | 1989 | 284,397 | | 1988 | 277,825 | | 1987 | 271,196 | | 1986 | 264,087 | | 1985 | 256,235 | | 1984 | 247,588 | | 1983 | 238,326 | | 1982 | 228,836 | | 1981 | 219,563 | | 1980 | 210,794 | | 1979 | 202,628 | | 1978 | 194,980 | | 1977 | 187,635 | | 1976 | 180,301 | | 1975 | 172,810 |
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