| Year | Value | | 2024 | 349,323 | | 2023 | 376,633 | | 2022 | 408,025 | | 2021 | 436,488 | | 2020 | 459,996 | | 2019 | 478,048 | | 2018 | 488,023 | | 2017 | 490,638 | | 2016 | 491,965 | | 2015 | 495,463 | | 2014 | 501,212 | | 2013 | 508,053 | | 2012 | 509,724 | | 2011 | 500,312 | | 2010 | 481,490 | | 2009 | 455,188 | | 2008 | 421,488 | | 2007 | 387,255 | | 2006 | 360,273 | | 2005 | 341,430 | | 2004 | 329,470 | | 2003 | 324,613 | | 2002 | 325,014 | | 2001 | 327,596 | | 2000 | 330,011 | | 1999 | 331,113 | | 1998 | 330,226 | | 1997 | 327,469 | | 1996 | 323,339 | | 1995 | 318,313 | | 1994 | 313,006 | | 1993 | 307,770 | | 1992 | 302,895 | | 1991 | 298,523 | | 1990 | 294,028 | | 1989 | 288,747 | | 1988 | 282,355 | | 1987 | 274,604 | | 1986 | 265,479 | | 1985 | 255,662 | | 1984 | 246,024 | | 1983 | 237,085 | | 1982 | 229,509 | | 1981 | 223,854 | | 1980 | 220,787 | | 1979 | 219,274 | | 1978 | 217,756 | | 1977 | 216,005 | | 1976 | 213,708 | | 1975 | 210,891 |
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