| Year | Value | | 2023 | 96,642 | | 2022 | 92,924 | | 2021 | 89,598 | | 2020 | 86,607 | | 2019 | 83,742 | | 2018 | 81,231 | | 2017 | 79,067 | | 2016 | 77,544 | | 2015 | 76,786 | | 2014 | 76,343 | | 2013 | 75,843 | | 2012 | 75,180 | | 2011 | 73,921 | | 2010 | 71,848 | | 2009 | 69,536 | | 2008 | 67,117 | | 2007 | 64,716 | | 2006 | 62,479 | | 2005 | 60,369 | | 2004 | 58,408 | | 2003 | 56,730 | | 2002 | 55,255 | | 2001 | 53,845 | | 2000 | 52,436 | | 1999 | 51,056 | | 1998 | 49,703 | | 1997 | 48,395 | | 1996 | 47,231 | | 1995 | 46,280 | | 1994 | 45,555 | | 1993 | 44,632 | | 1992 | 43,680 | | 1991 | 43,041 | | 1990 | 42,453 | | 1989 | 41,906 | | 1988 | 41,411 | | 1987 | 40,955 | | 1986 | 40,505 | | 1985 | 40,039 | | 1984 | 39,556 | | 1983 | 39,047 | | 1982 | 38,533 | | 1981 | 38,065 | | 1980 | 37,677 | | 1979 | 37,368 | | 1978 | 37,134 | | 1977 | 36,957 | | 1976 | 36,787 | | 1975 | 36,599 |
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