| Year | Value | | 2023 | 864,143 | | 2022 | 848,681 | | 2021 | 808,850 | | 2020 | 748,614 | | 2019 | 714,460 | | 2018 | 701,975 | | 2017 | 682,435 | | 2016 | 655,128 | | 2015 | 620,293 | | 2014 | 578,564 | | 2013 | 530,538 | | 2012 | 476,897 | | 2011 | 418,628 | | 2010 | 357,196 | | 2009 | 307,860 | | 2008 | 281,547 | | 2007 | 270,691 | | 2006 | 266,233 | | 2005 | 258,851 | | 2004 | 244,260 | | 2003 | 228,667 | | 2002 | 217,638 | | 2001 | 209,784 | | 2000 | 203,396 | | 1999 | 197,079 | | 1998 | 190,143 | | 1997 | 182,457 | | 1996 | 174,404 | | 1995 | 163,433 | | 1994 | 150,561 | | 1993 | 139,430 | | 1992 | 129,446 | | 1991 | 119,953 | | 1990 | 110,428 | | 1989 | 100,752 | | 1988 | 91,218 | | 1987 | 82,280 | | 1986 | 74,446 | | 1985 | 68,266 | | 1984 | 63,706 | | 1983 | 60,073 | | 1982 | 56,731 | | 1981 | 53,294 | | 1980 | 48,116 | | 1979 | 41,715 | | 1978 | 36,130 | | 1977 | 31,324 | | 1976 | 27,211 | | 1975 | 23,321 | | 1974 | 19,662 |
|