| Year | Value | | 2022 | 5,162 | | 2021 | 4,977 | | 2020 | 4,792 | | 2019 | 4,600 | | 2018 | 4,409 | | 2017 | 4,228 | | 2016 | 4,057 | | 2015 | 3,895 | | 2014 | 3,737 | | 2013 | 3,586 | | 2012 | 3,445 | | 2011 | 3,313 | | 2010 | 3,188 | | 2009 | 3,068 | | 2008 | 2,953 | | 2007 | 2,843 | | 2006 | 2,733 | | 2005 | 2,628 | | 2004 | 2,529 | | 2003 | 2,437 | | 2002 | 2,352 | | 2001 | 2,274 | | 2000 | 2,204 | | 1999 | 2,135 | | 1998 | 2,067 | | 1997 | 2,001 | | 1996 | 1,935 | | 1995 | 1,874 | | 1994 | 1,834 | | 1993 | 1,780 | | 1992 | 1,792 | | 1991 | 1,785 | | 1990 | 1,624 | | 1989 | 1,456 | | 1988 | 1,338 | | 1987 | 1,245 | | 1986 | 1,157 | | 1985 | 1,080 | | 1984 | 1,018 | | 1983 | 969 | | 1982 | 923 | | 1981 | 877 | | 1980 | 824 | | 1979 | 763 | | 1978 | 698 | | 1977 | 631 | | 1976 | 567 | | 1975 | 513 | | 1974 | 467 | | 1973 | 427 | | 1972 | 392 | | 1971 | 365 | | 1970 | 340 | | 1969 | 317 | | 1968 | 297 | | 1967 | 280 | | 1966 | 263 | | 1965 | 245 | | 1964 | 228 | | 1963 | 210 | | 1962 | 193 | | 1961 | 177 | | 1960 | 165 |
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