| Year | Value | | 2023 | 104,408 | | 2022 | 102,245 | | 2021 | 100,769 | | 2020 | 96,787 | | 2019 | 101,436 | | 2018 | 99,629 | | 2017 | 96,834 | | 2016 | 95,004 | | 2015 | 91,913 | | 2014 | 88,933 | | 2013 | 86,026 | | 2012 | 83,185 | | 2011 | 80,410 | | 2010 | 77,710 | | 2009 | 75,124 | | 2008 | 72,665 | | 2007 | 70,313 | | 2006 | 68,039 | | 2005 | 65,837 | | 2004 | 63,702 | | 2003 | 61,366 | | 2002 | 58,813 | | 2001 | 56,267 | | 2000 | 53,741 | | 1999 | 51,258 | | 1998 | 49,711 | | 1997 | 48,201 | | 1996 | 46,737 | | 1995 | 45,314 | | 1994 | 44,651 | | 1993 | 44,128 | | 1992 | 45,195 | | 1991 | 45,102 |
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