Year | Value | 2023 | 79,510 | 2022 | 77,867 | 2021 | 76,701 | 2020 | 76,046 | 2019 | 74,919 | 2018 | 73,810 | 2017 | 72,225 | 2016 | 69,529 | 2015 | 65,238 | 2014 | 59,599 | 2013 | 52,854 | 2012 | 46,761 | 2011 | 44,594 | 2010 | 47,861 | 2009 | 57,007 | 2008 | 69,740 | 2007 | 80,822 | 2006 | 87,421 | 2005 | 88,615 | 2004 | 86,303 | 2003 | 82,522 | 2002 | 78,778 | 2001 | 76,087 | 2000 | 75,917 | 1999 | 78,826 | 1998 | 83,631 | 1997 | 88,906 | 1996 | 93,223 | 1995 | 95,292 | 1994 | 94,280 | 1993 | 87,823 | 1992 | 77,450 | 1991 | 67,585 | 1990 | 59,332 | 1989 | 52,733 | 1988 | 47,696 | 1987 | 44,262 | 1986 | 42,330 | 1985 | 41,828 | 1984 | 42,784 | 1983 | 44,759 | 1982 | 47,073 | 1981 | 49,234 | 1980 | 50,993 | 1979 | 51,950 | 1978 | 52,223 | 1977 | 52,230 | 1976 | 51,867 | 1975 | 51,192 |
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