| Year | Value | | 2024 | 855,941 | | 2023 | 829,410 | | 2022 | 810,395 | | 2021 | 798,286 | | 2020 | 778,435 | | 2019 | 751,887 | | 2018 | 727,259 | | 2017 | 702,720 | | 2016 | 678,094 | | 2015 | 654,748 | | 2014 | 627,503 | | 2013 | 597,552 | | 2012 | 569,688 | | 2011 | 539,176 | | 2010 | 511,568 | | 2009 | 488,757 | | 2008 | 463,755 | | 2007 | 446,838 | | 2006 | 432,673 | | 2005 | 410,995 | | 2004 | 393,806 | | 2003 | 378,262 | | 2002 | 355,136 | | 2001 | 337,400 | | 2000 | 336,146 | | 1999 | 333,811 | | 1998 | 323,730 | | 1997 | 314,217 | | 1996 | 304,932 | | 1995 | 295,089 | | 1994 | 283,648 | | 1993 | 263,446 | | 1992 | 237,044 | | 1991 | 223,113 | | 1990 | 225,544 | | 1989 | 228,019 | | 1988 | 226,619 | | 1987 | 228,838 | | 1986 | 232,694 | | 1985 | 235,760 | | 1984 | 234,079 | | 1983 | 231,613 | | 1982 | 236,734 | | 1981 | 261,438 | | 1980 | 292,580 | | 1979 | 307,064 | | 1978 | 308,990 | | 1977 | 305,152 | | 1976 | 301,114 | | 1975 | 297,345 |
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