| Year | Value | | 2024 | 408,672 | | 2023 | 408,244 | | 2022 | 407,837 | | 2021 | 408,326 | | 2020 | 408,844 | | 2019 | 408,447 | | 2018 | 407,720 | | 2017 | 406,884 | | 2016 | 405,918 | | 2015 | 404,887 | | 2014 | 403,707 | | 2013 | 402,349 | | 2012 | 400,966 | | 2011 | 399,633 | | 2010 | 398,335 | | 2009 | 396,408 | | 2008 | 393,882 | | 2007 | 391,103 | | 2006 | 388,150 | | 2005 | 384,996 | | 2004 | 381,570 | | 2003 | 377,761 | | 2002 | 372,155 | | 2001 | 365,276 | | 2000 | 357,465 | | 1999 | 350,995 | | 1998 | 344,356 | | 1997 | 337,538 | | 1996 | 330,467 | | 1995 | 323,194 | | 1994 | 315,863 | | 1993 | 308,823 | | 1992 | 302,573 | | 1991 | 297,734 | | 1990 | 294,343 | | 1989 | 291,998 | | 1988 | 290,356 | | 1987 | 288,928 | | 1986 | 287,091 | | 1985 | 284,393 | | 1984 | 280,573 | | 1983 | 275,685 | | 1982 | 269,972 | | 1981 | 263,841 | | 1980 | 257,279 | | 1979 | 250,027 | | 1978 | 242,207 | | 1977 | 233,828 | | 1976 | 224,788 |
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