| Year | Value | | 2022 | 262,476 | | 2021 | 256,330 | | 2020 | 250,151 | | 2019 | 244,613 | | 2018 | 240,119 | | 2017 | 236,229 | | 2016 | 234,264 | | 2015 | 232,709 | | 2014 | 231,623 | | 2013 | 230,654 | | 2012 | 229,785 | | 2011 | 228,223 | | 2010 | 225,278 | | 2009 | 220,768 | | 2008 | 214,782 | | 2007 | 207,335 | | 2006 | 199,519 | | 2005 | 191,665 | | 2004 | 184,036 | | 2003 | 176,736 | | 2002 | 169,825 | | 2001 | 163,523 | | 2000 | 157,982 | | 1999 | 152,909 | | 1998 | 148,094 | | 1997 | 143,832 | | 1996 | 137,437 | | 1995 | 131,515 | | 1994 | 125,970 | | 1993 | 120,739 | | 1992 | 115,758 | | 1991 | 110,945 | | 1990 | 106,299 |
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