| Year | Value | | 2024 | 568,816 | | 2023 | 541,979 | | 2022 | 516,831 | | 2021 | 493,798 | | 2020 | 471,973 | | 2019 | 449,771 | | 2018 | 427,652 | | 2017 | 406,006 | | 2016 | 384,939 | | 2015 | 365,214 | | 2014 | 346,406 | | 2013 | 328,490 | | 2012 | 311,638 | | 2011 | 295,489 | | 2010 | 280,102 | | 2009 | 265,387 | | 2008 | 251,461 | | 2007 | 238,552 | | 2006 | 226,596 | | 2005 | 215,491 | | 2004 | 207,640 | | 2003 | 204,149 | | 2002 | 203,735 | | 2001 | 205,481 | | 2000 | 207,900 | | 1999 | 208,693 | | 1998 | 206,832 | | 1997 | 202,942 | | 1996 | 197,959 | | 1995 | 193,320 | | 1994 | 189,134 | | 1993 | 185,290 | | 1992 | 181,659 | | 1991 | 177,842 | | 1990 | 173,650 | | 1989 | 169,339 | | 1988 | 165,028 | | 1987 | 160,621 | | 1986 | 156,522 | | 1985 | 152,689 | | 1984 | 148,809 | | 1983 | 144,979 | | 1982 | 141,263 | | 1981 | 137,714 | | 1980 | 134,347 | | 1979 | 131,130 | | 1978 | 128,010 | | 1977 | 124,967 | | 1976 | 121,982 | | 1975 | 119,077 |
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