| Year | Value | | 2022 | 1,551 | | 2021 | 1,636 | | 2020 | 1,755 | | 2019 | 1,889 | | 2018 | 2,046 | | 2017 | 2,216 | | 2016 | 2,389 | | 2015 | 2,564 | | 2014 | 2,717 | | 2013 | 2,827 | | 2012 | 2,904 | | 2011 | 2,969 | | 2010 | 3,041 | | 2009 | 3,027 | | 2008 | 2,918 | | 2007 | 2,787 | | 2006 | 2,630 | | 2005 | 2,454 | | 2004 | 2,273 | | 2003 | 2,095 | | 2002 | 1,925 | | 2001 | 1,779 | | 2000 | 1,660 | | 1999 | 1,594 | | 1998 | 1,571 | | 1997 | 1,559 | | 1996 | 1,555 | | 1995 | 1,557 | | 1994 | 1,560 | | 1993 | 1,563 | | 1992 | 1,569 | | 1991 | 1,577 | | 1990 | 1,586 | | 1989 | 1,591 | | 1988 | 1,593 | | 1987 | 1,599 | | 1986 | 1,609 | | 1985 | 1,619 | | 1984 | 1,631 | | 1983 | 1,635 | | 1982 | 1,625 | | 1981 | 1,602 | | 1980 | 1,565 | | 1979 | 1,516 | | 1978 | 1,458 | | 1977 | 1,386 | | 1976 | 1,303 | | 1975 | 1,210 | | 1974 | 1,113 | | 1973 | 1,017 | | 1972 | 930 | | 1971 | 847 | | 1970 | 768 | | 1969 | 695 | | 1968 | 631 | | 1967 | 577 | | 1966 | 532 | | 1965 | 495 | | 1964 | 463 | | 1963 | 437 | | 1962 | 414 | | 1961 | 397 | | 1960 | 384 |
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