| Year | Value | | 2024 | 258,291 | | 2023 | 257,169 | | 2022 | 280,477 | | 2021 | 273,100 | | 2020 | 315,189 | | 2019 | 323,677 | | 2018 | 342,719 | | 2017 | 355,317 | | 2016 | 351,222 | | 2015 | 328,058 | | 2014 | 296,753 | | 2013 | 263,893 | | 2012 | 233,716 | | 2011 | 214,122 | | 2010 | 212,732 | | 2009 | 223,881 | | 2008 | 207,583 | | 2007 | 160,765 | | 2006 | 100,606 | | 2005 | 68,721 | | 2004 | 63,150 | | 2003 | 61,326 | | 2002 | 58,152 | | 2001 | 54,820 | | 2000 | 51,623 | | 1999 | 48,776 | | 1998 | 46,420 | | 1997 | 44,671 | | 1996 | 43,508 | | 1995 | 42,335 | | 1994 | 40,856 | | 1993 | 39,445 | | 1992 | 38,369 | | 1991 | 37,776 | | 1990 | 37,678 | | 1989 | 38,048 | | 1988 | 38,820 | | 1987 | 39,871 | | 1986 | 40,903 | | 1985 | 40,872 | | 1984 | 39,473 | | 1983 | 37,326 | | 1982 | 34,647 | | 1981 | 31,648 | | 1980 | 28,493 | | 1979 | 25,301 | | 1978 | 22,228 | | 1977 | 19,397 | | 1976 | 16,871 | | 1975 | 14,673 |
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