| Year | Value | | 2019 | 96,740 | | 2018 | 93,912 | | 2017 | 90,954 | | 2016 | 87,869 | | 2015 | 84,995 | | 2014 | 82,018 | | 2013 | 79,158 | | 2012 | 76,410 | | 2011 | 73,768 | | 2010 | 71,249 | | 2009 | 68,632 | | 2008 | 66,107 | | 2007 | 63,675 | | 2006 | 61,331 | | 2005 | 59,078 | | 2004 | 56,740 | | 2003 | 54,473 | | 2002 | 52,303 | | 2001 | 50,256 | | 2000 | 48,349 | | 1999 | 46,353 | | 1998 | 44,509 | | 1997 | 42,798 | | 1996 | 41,197 | | 1995 | 39,709 | | 1994 | 38,245 | | 1993 | 36,924 | | 1992 | 35,705 | | 1991 | 34,596 | | 1990 | 33,640 |
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