Year | Value | 2023 | 24,661 | 2022 | 24,572 | 2021 | 24,297 | 2020 | 24,051 | 2019 | 23,911 | 2018 | 23,678 | 2017 | 23,395 | 2016 | 23,095 | 2015 | 22,765 | 2014 | 22,344 | 2013 | 21,799 | 2012 | 21,133 | 2011 | 20,377 | 2010 | 19,552 | 2009 | 18,707 | 2008 | 17,921 | 2007 | 17,248 | 2006 | 16,692 | 2005 | 16,224 | 2004 | 15,798 | 2003 | 15,385 | 2002 | 14,967 | 2001 | 14,520 | 2000 | 14,111 | 1999 | 13,856 | 1998 | 13,683 | 1997 | 13,467 | 1996 | 13,181 | 1995 | 12,784 | 1994 | 12,255 | 1993 | 11,631 | 1992 | 10,959 | 1991 | 10,272 | 1990 | 9,578 | 1989 | 8,958 | 1988 | 8,421 | 1987 | 7,894 | 1986 | 7,378 | 1985 | 6,890 | 1984 | 6,437 | 1983 | 6,031 | 1982 | 5,676 | 1981 | 5,379 | 1980 | 5,211 | 1979 | 5,330 | 1978 | 5,599 | 1977 | 5,781 | 1976 | 5,845 | 1975 | 5,766 |
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