| Year | Value | | 2023 | 390,514 | | 2022 | 382,456 | | 2021 | 363,896 | | 2020 | 362,045 | | 2019 | 372,177 | | 2018 | 370,907 | | 2017 | 370,182 | | 2016 | 369,664 | | 2015 | 372,681 | | 2014 | 375,549 | | 2013 | 382,931 | | 2012 | 389,837 | | 2011 | 396,150 | | 2010 | 387,052 | | 2009 | 377,788 | | 2008 | 368,200 | | 2007 | 357,794 | | 2006 | 346,566 | | 2005 | 335,118 | | 2004 | 338,590 | | 2003 | 334,199 | | 2002 | 329,671 | | 2001 | 324,952 | | 2000 | 319,906 | | 1999 | 314,452 | | 1998 | 308,693 | | 1997 | 302,943 | | 1996 | 297,960 | | 1995 | 294,497 | | 1994 | 291,989 | | 1993 | 290,074 | | 1992 | 287,863 | | 1991 | 286,823 |
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