| Year | Value | | 2023 | 186,291 | | 2022 | 181,716 | | 2021 | 178,384 | | 2020 | 178,283 | | 2019 | 183,532 | | 2018 | 180,730 | | 2017 | 175,043 | | 2016 | 170,029 | | 2015 | 165,598 | | 2014 | 159,405 | | 2013 | 151,158 | | 2012 | 145,086 | | 2011 | 143,310 | | 2010 | 147,582 | | 2009 | 140,339 | | 2008 | 128,672 | | 2007 | 117,713 | | 2006 | 107,423 | | 2005 | 97,755 | | 2004 | 88,686 | | 2003 | 81,132 | | 2002 | 75,832 | | 2001 | 71,665 | | 2000 | 67,544 | | 1999 | 63,568 | | 1998 | 59,733 | | 1997 | 56,077 | | 1996 | 52,646 | | 1995 | 49,461 | | 1994 | 46,501 | | 1993 | 43,734 | | 1992 | 41,159 | | 1991 | 38,770 |
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