| Year | Value | | 2023 | 257,317 | | 2022 | 251,844 | | 2021 | 238,872 | | 2020 | 232,695 | | 2019 | 240,383 | | 2018 | 228,928 | | 2017 | 239,923 | | 2016 | 235,863 | | 2015 | 231,746 | | 2014 | 227,455 | | 2013 | 223,037 | | 2012 | 218,615 | | 2011 | 214,157 | | 2010 | 209,631 | | 2009 | 205,079 | | 2008 | 200,110 | | 2007 | 195,035 | | 2006 | 189,912 | | 2005 | 184,772 | | 2004 | 179,617 | | 2003 | 174,444 | | 2002 | 169,257 | | 2001 | 164,071 | | 2000 | 158,891 | | 1999 | 153,844 | | 1998 | 148,943 | | 1997 | 144,118 | | 1996 | 139,411 | | 1995 | 134,896 | | 1994 | 130,614 | | 1993 | 126,589 | | 1992 | 122,939 | | 1991 | 119,861 |
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