Year | Value | 2023 | 4,565 | 2022 | 4,529 | 2021 | 4,481 | 2020 | 4,401 | 2019 | 4,279 | 2018 | 4,122 | 2017 | 3,950 | 2016 | 3,770 | 2015 | 3,590 | 2014 | 3,413 | 2013 | 3,240 | 2012 | 3,073 | 2011 | 2,911 | 2010 | 2,755 | 2009 | 2,610 | 2008 | 2,476 | 2007 | 2,348 | 2006 | 2,224 | 2005 | 2,117 | 2004 | 2,035 | 2003 | 1,980 | 2002 | 1,949 | 2001 | 1,930 | 2000 | 1,893 | 1999 | 1,839 | 1998 | 1,787 | 1997 | 1,717 | 1996 | 1,617 | 1995 | 1,509 | 1994 | 1,415 | 1993 | 1,321 | 1992 | 1,218 | 1991 | 1,074 | 1990 | 916 | 1989 | 813 | 1988 | 764 | 1987 | 760 | 1986 | 778 | 1985 | 800 | 1984 | 820 | 1983 | 843 | 1982 | 878 | 1981 | 927 | 1980 | 948 | 1979 | 935 | 1978 | 923 | 1977 | 917 | 1976 | 917 | 1975 | 915 | 1974 | 905 |
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