| Year | Value | | 2023 | 301,690 | | 2022 | 294,774 | | 2021 | 282,572 | | 2020 | 275,724 | | 2019 | 265,572 | | 2018 | 250,469 | | 2017 | 233,766 | | 2016 | 222,635 | | 2015 | 212,910 | | 2014 | 205,554 | | 2013 | 196,571 | | 2012 | 187,153 | | 2011 | 179,957 | | 2010 | 175,569 | | 2009 | 171,711 | | 2008 | 169,512 | | 2007 | 167,554 | | 2006 | 163,771 | | 2005 | 161,896 | | 2004 | 158,535 | | 2003 | 160,977 | | 2002 | 159,652 | | 2001 | 157,928 | | 2000 | 154,313 | | 1999 | 154,490 | | 1998 | 152,966 | | 1997 | 151,409 | | 1996 | 149,379 | | 1995 | 147,038 | | 1994 | 145,290 | | 1993 | 143,437 | | 1992 | 141,331 | | 1991 | 139,117 |
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