| Year | Value | | 2023 | 80,212 | | 2022 | 79,681 | | 2021 | 78,638 | | 2020 | 76,694 | | 2019 | 77,344 | | 2018 | 77,271 | | 2017 | 77,176 | | 2016 | 77,049 | | 2015 | 76,879 | | 2014 | 76,650 | | 2013 | 76,362 | | 2012 | 76,031 | | 2011 | 75,657 | | 2010 | 73,809 | | 2009 | 73,744 | | 2008 | 70,977 | | 2007 | 68,162 | | 2006 | 73,394 | | 2005 | 70,975 | | 2004 | 71,107 | | 2003 | 70,968 | | 2002 | 70,851 | | 2001 | 73,941 | | 2000 | 75,788 | | 1999 | 75,471 | | 1998 | 74,965 | | 1997 | 74,448 | | 1996 | 73,927 | | 1995 | 73,383 | | 1994 | 72,813 | | 1993 | 72,249 | | 1992 | 71,686 | | 1991 | 71,111 |
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