| Year | Value | | 2022 | 4,018 | | 2021 | 3,906 | | 2020 | 3,795 | | 2019 | 3,663 | | 2018 | 3,519 | | 2017 | 3,382 | | 2016 | 3,251 | | 2015 | 3,124 | | 2014 | 3,003 | | 2013 | 2,886 | | 2012 | 2,774 | | 2011 | 2,671 | | 2010 | 2,575 | | 2009 | 2,477 | | 2008 | 2,382 | | 2007 | 2,291 | | 2006 | 2,199 | | 2005 | 2,107 | | 2004 | 2,021 | | 2003 | 1,937 | | 2002 | 1,860 | | 2001 | 1,791 | | 2000 | 1,730 | | 1999 | 1,673 | | 1998 | 1,618 | | 1997 | 1,564 | | 1996 | 1,509 | | 1995 | 1,456 | | 1994 | 1,423 | | 1993 | 1,378 | | 1992 | 1,390 | | 1991 | 1,390 | | 1990 | 1,264 | | 1989 | 1,130 | | 1988 | 1,035 | | 1987 | 960 | | 1986 | 891 | | 1985 | 833 | | 1984 | 784 | | 1983 | 744 | | 1982 | 709 | | 1981 | 672 | | 1980 | 632 | | 1979 | 585 | | 1978 | 532 | | 1977 | 478 | | 1976 | 428 | | 1975 | 386 | | 1974 | 351 | | 1973 | 323 | | 1972 | 299 | | 1971 | 276 | | 1970 | 256 | | 1969 | 238 | | 1968 | 222 | | 1967 | 209 | | 1966 | 194 | | 1965 | 181 | | 1964 | 166 | | 1963 | 151 | | 1962 | 138 | | 1961 | 129 | | 1960 | 122 |
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