| Year | Value | | 2023 | 76,895 | | 2022 | 75,463 | | 2021 | 72,959 | | 2020 | 71,346 | | 2019 | 70,843 | | 2018 | 70,143 | | 2017 | 69,251 | | 2016 | 68,515 | | 2015 | 68,129 | | 2014 | 67,605 | | 2013 | 66,849 | | 2012 | 66,037 | | 2011 | 65,054 | | 2010 | 64,460 | | 2009 | 63,706 | | 2008 | 62,711 | | 2007 | 61,992 | | 2006 | 61,481 | | 2005 | 60,902 | | 2004 | 60,611 | | 2003 | 60,378 | | 2002 | 60,117 | | 2001 | 59,927 | | 2000 | 59,864 | | 1999 | 59,708 | | 1998 | 59,333 | | 1997 | 58,943 | | 1996 | 58,459 | | 1995 | 58,236 | | 1994 | 57,934 | | 1993 | 57,137 | | 1992 | 56,641 | | 1991 | 56,070 |
|