Year | Value | 2023 | 3,587 | 2022 | 3,600 | 2021 | 3,625 | 2020 | 3,676 | 2019 | 3,709 | 2018 | 3,710 | 2017 | 3,715 | 2016 | 3,723 | 2015 | 3,735 | 2014 | 3,749 | 2013 | 3,772 | 2012 | 3,814 | 2011 | 3,875 | 2010 | 3,956 | 2009 | 4,037 | 2008 | 4,128 | 2007 | 4,209 | 2006 | 4,224 | 2005 | 4,221 | 2004 | 4,300 | 2003 | 4,409 | 2002 | 4,504 | 2001 | 4,591 | 2000 | 4,627 | 1999 | 4,490 | 1998 | 4,231 | 1997 | 4,008 | 1996 | 3,824 | 1995 | 3,697 | 1994 | 3,614 | 1993 | 3,529 | 1992 | 3,416 | 1991 | 3,356 | 1990 | 3,316 | 1989 | 3,196 | 1988 | 3,032 | 1987 | 2,881 | 1986 | 2,756 | 1985 | 2,643 | 1984 | 2,544 | 1983 | 2,448 | 1982 | 2,330 | 1981 | 2,224 | 1980 | 2,161 | 1979 | 2,125 | 1978 | 2,108 | 1977 | 2,099 | 1976 | 2,081 | 1975 | 2,044 | 1974 | 1,998 |
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