| Year | Value | | 2023 | 125,981 | | 2022 | 118,279 | | 2021 | 110,435 | | 2020 | 99,803 | | 2019 | 86,529 | | 2018 | 73,772 | | 2017 | 65,088 | | 2016 | 62,784 | | 2015 | 68,357 | | 2014 | 79,761 | | 2013 | 94,345 | | 2012 | 107,762 | | 2011 | 116,941 | | 2010 | 121,128 | | 2009 | 120,557 | | 2008 | 114,916 | | 2007 | 107,870 | | 2006 | 100,327 | | 2005 | 94,665 | | 2004 | 92,422 | | 2003 | 90,698 | | 2002 | 87,811 | | 2001 | 84,375 | | 2000 | 79,092 | | 1999 | 72,965 | | 1998 | 69,728 | | 1997 | 67,217 | | 1996 | 64,862 | | 1995 | 63,261 | | 1994 | 60,235 | | 1993 | 55,945 | | 1992 | 53,372 | | 1991 | 52,064 | | 1990 | 49,992 | | 1989 | 48,398 | | 1988 | 48,109 | | 1987 | 47,358 | | 1986 | 48,214 | | 1985 | 48,235 | | 1984 | 47,787 | | 1983 | 47,646 | | 1982 | 47,727 | | 1981 | 47,692 | | 1980 | 47,540 | | 1979 | 47,395 | | 1978 | 47,367 | | 1977 | 47,576 | | 1976 | 47,852 | | 1975 | 47,814 |
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