| Year | Value | | 2023 | 62,424 | | 2022 | 60,500 | | 2021 | 58,726 | | 2020 | 56,699 | | 2019 | 55,835 | | 2018 | 54,554 | | 2017 | 53,300 | | 2016 | 52,249 | | 2015 | 51,186 | | 2014 | 49,981 | | 2013 | 48,928 | | 2012 | 47,752 | | 2011 | 46,618 | | 2010 | 45,578 | | 2009 | 44,284 | | 2008 | 42,917 | | 2007 | 41,668 | | 2006 | 40,318 | | 2005 | 39,194 | | 2004 | 37,958 | | 2003 | 36,693 | | 2002 | 35,466 | | 2001 | 33,927 | | 2000 | 32,520 | | 1999 | 31,575 | | 1998 | 30,625 | | 1997 | 29,764 | | 1996 | 29,052 | | 1995 | 28,299 | | 1994 | 27,534 | | 1993 | 27,050 | | 1992 | 26,403 | | 1991 | 25,821 |
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