| Year | Value | | 2022 | 81,376 | | 2021 | 78,747 | | 2020 | 76,235 | | 2019 | 73,765 | | 2018 | 71,280 | | 2017 | 68,786 | | 2016 | 66,653 | | 2015 | 64,327 | | 2014 | 61,934 | | 2013 | 59,481 | | 2012 | 57,005 | | 2011 | 54,551 | | 2010 | 52,167 | | 2009 | 49,839 | | 2008 | 47,601 | | 2007 | 45,502 | | 2006 | 43,684 | | 2005 | 41,946 | | 2004 | 40,556 | | 2003 | 39,034 | | 2002 | 37,202 | | 2001 | 35,596 | | 2000 | 34,179 | | 1999 | 32,643 | | 1998 | 31,454 | | 1997 | 30,797 | | 1996 | 29,504 | | 1995 | 28,297 | | 1994 | 27,171 | | 1993 | 26,134 | | 1992 | 25,200 | | 1991 | 24,293 | | 1990 | 23,336 |
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