| Year | Value | | 2024 | 102,600 | | 2023 | 105,184 | | 2022 | 108,545 | | 2021 | 111,899 | | 2020 | 114,864 | | 2019 | 117,542 | | 2018 | 119,788 | | 2017 | 121,497 | | 2016 | 122,455 | | 2015 | 122,422 | | 2014 | 121,151 | | 2013 | 116,852 | | 2012 | 110,575 | | 2011 | 105,053 | | 2010 | 99,902 | | 2009 | 94,867 | | 2008 | 92,412 | | 2007 | 91,885 | | 2006 | 91,032 | | 2005 | 89,894 | | 2004 | 88,376 | | 2003 | 87,275 | | 2002 | 86,790 | | 2001 | 86,835 | | 2000 | 87,123 | | 1999 | 88,108 | | 1998 | 90,594 | | 1997 | 94,074 | | 1996 | 97,751 | | 1995 | 101,140 | | 1994 | 103,370 | | 1993 | 103,983 | | 1992 | 92,011 | | 1991 | 79,830 | | 1990 | 78,779 | | 1989 | 77,132 | | 1988 | 73,721 | | 1987 | 66,945 | | 1986 | 61,204 | | 1985 | 58,730 | | 1984 | 56,975 | | 1983 | 55,928 | | 1982 | 57,213 | | 1981 | 59,278 | | 1980 | 73,018 | | 1979 | 83,575 | | 1978 | 74,107 | | 1977 | 63,041 | | 1976 | 56,578 | | 1975 | 52,575 |
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