| Year | Value | | 2023 | 347,323 | | 2022 | 338,747 | | 2021 | 333,257 | | 2020 | 322,041 | | 2019 | 315,771 | | 2018 | 305,430 | | 2017 | 296,430 | | 2016 | 286,784 | | 2015 | 285,050 | | 2014 | 278,241 | | 2013 | 268,091 | | 2012 | 258,659 | | 2011 | 246,661 | | 2010 | 240,833 | | 2009 | 237,839 | | 2008 | 224,282 | | 2007 | 219,204 | | 2006 | 214,872 | | 2005 | 210,533 | | 2004 | 204,896 | | 2003 | 198,677 | | 2002 | 198,187 | | 2001 | 192,605 | | 2000 | 188,839 | | 1999 | 182,734 | | 1998 | 177,043 | | 1997 | 174,574 | | 1996 | 171,873 | | 1995 | 169,267 | | 1994 | 173,480 | | 1993 | 171,764 | | 1992 | 172,615 | | 1991 | 165,346 |
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