| Year | Value | | 2024 | 152,381 | | 2023 | 148,556 | | 2022 | 147,136 | | 2021 | 147,889 | | 2020 | 149,477 | | 2019 | 149,771 | | 2018 | 147,987 | | 2017 | 144,531 | | 2016 | 140,175 | | 2015 | 136,286 | | 2014 | 132,882 | | 2013 | 129,729 | | 2012 | 126,785 | | 2011 | 123,725 | | 2010 | 120,413 | | 2009 | 117,008 | | 2008 | 113,546 | | 2007 | 110,021 | | 2006 | 106,616 | | 2005 | 103,413 | | 2004 | 100,387 | | 2003 | 97,437 | | 2002 | 94,531 | | 2001 | 91,724 | | 2000 | 89,012 | | 1999 | 86,374 | | 1998 | 83,795 | | 1997 | 81,276 | | 1996 | 78,827 | | 1995 | 76,432 | | 1994 | 74,088 | | 1993 | 71,823 | | 1992 | 69,641 | | 1991 | 67,528 | | 1990 | 65,474 | | 1989 | 63,478 | | 1988 | 61,559 | | 1987 | 59,711 | | 1986 | 57,933 | | 1985 | 56,241 | | 1984 | 54,637 | | 1983 | 53,128 | | 1982 | 51,714 | | 1981 | 50,364 | | 1980 | 49,057 | | 1979 | 47,807 | | 1978 | 46,608 | | 1977 | 45,464 | | 1976 | 44,392 | | 1975 | 43,397 |
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