| Year | Value | | 2023 | 106,277 | | 2022 | 106,445 | | 2021 | 106,537 | | 2020 | 106,585 | | 2019 | 106,442 | | 2018 | 105,962 | | 2017 | 105,439 | | 2016 | 104,874 | | 2015 | 104,257 | | 2014 | 103,594 | | 2013 | 102,880 | | 2012 | 102,112 | | 2011 | 101,288 | | 2010 | 100,341 | | 2009 | 99,212 | | 2008 | 97,996 | | 2007 | 96,787 | | 2006 | 95,606 | | 2005 | 94,483 | | 2004 | 93,540 | | 2003 | 92,701 | | 2002 | 91,781 | | 2001 | 90,691 | | 2000 | 89,101 | | 1999 | 86,867 | | 1998 | 84,355 | | 1997 | 81,858 | | 1996 | 79,417 | | 1995 | 77,050 | | 1994 | 74,710 | | 1993 | 72,360 | | 1992 | 70,192 | | 1991 | 67,864 | | 1990 | 65,712 | | 1989 | 64,596 | | 1988 | 64,332 | | 1987 | 64,450 | | 1986 | 64,553 | | 1985 | 64,478 | | 1984 | 64,174 | | 1983 | 63,683 | | 1982 | 63,116 | | 1981 | 62,614 | | 1980 | 62,267 | | 1979 | 62,006 | | 1978 | 61,738 | | 1977 | 61,465 | | 1976 | 61,193 | | 1975 | 60,715 | | 1974 | 60,028 |
|