| Year | Value | | 2024 | 353,800 | | 2023 | 324,559 | | 2022 | 318,471 | | 2021 | 294,484 | | 2020 | 323,579 | | 2019 | 301,382 | | 2018 | 281,742 | | 2017 | 260,900 | | 2016 | 246,529 | | 2015 | 233,305 | | 2014 | 211,411 | | 2013 | 184,073 | | 2012 | 168,859 | | 2011 | 170,117 | | 2010 | 177,920 | | 2009 | 172,810 | | 2008 | 143,494 | | 2007 | 116,222 | | 2006 | 88,156 | | 2005 | 70,449 | | 2004 | 66,030 | | 2003 | 64,257 | | 2002 | 61,232 | | 2001 | 58,766 | | 2000 | 56,720 | | 1999 | 54,969 | | 1998 | 53,389 | | 1997 | 51,852 | | 1996 | 50,225 | | 1995 | 48,537 | | 1994 | 46,868 | | 1993 | 45,184 | | 1992 | 43,454 | | 1991 | 41,691 | | 1990 | 39,918 | | 1989 | 38,135 | | 1988 | 36,382 | | 1987 | 34,715 | | 1986 | 32,887 | | 1985 | 29,972 | | 1984 | 26,376 | | 1983 | 23,201 | | 1982 | 20,443 | | 1981 | 18,041 | | 1980 | 15,951 | | 1979 | 14,151 | | 1978 | 12,603 | | 1977 | 11,273 | | 1976 | 10,132 | | 1975 | 9,140 |
|