| Year | Value | | 2022 | 5,097 | | 2021 | 4,879 | | 2020 | 4,690 | | 2019 | 4,516 | | 2018 | 4,334 | | 2017 | 4,156 | | 2016 | 3,966 | | 2015 | 3,764 | | 2014 | 3,570 | | 2013 | 3,402 | | 2012 | 3,260 | | 2011 | 3,151 | | 2010 | 3,068 | | 2009 | 2,984 | | 2008 | 2,876 | | 2007 | 2,749 | | 2006 | 2,612 | | 2005 | 2,468 | | 2004 | 2,328 | | 2003 | 2,210 | | 2002 | 2,106 | | 2001 | 2,018 | | 2000 | 1,951 | | 1999 | 1,887 | | 1998 | 1,814 | | 1997 | 1,741 | | 1996 | 1,679 | | 1995 | 1,634 | | 1994 | 1,606 | | 1993 | 1,592 | | 1992 | 1,592 | | 1991 | 1,606 | | 1990 | 1,635 | | 1989 | 1,681 | | 1988 | 1,740 | | 1987 | 1,805 | | 1986 | 1,866 | | 1985 | 1,914 | | 1984 | 1,951 | | 1983 | 1,979 | | 1982 | 1,997 | | 1981 | 1,957 | | 1980 | 1,875 | | 1979 | 1,816 | | 1978 | 1,773 | | 1977 | 1,736 | | 1976 | 1,698 | | 1975 | 1,651 | | 1974 | 1,597 | | 1973 | 1,539 | | 1972 | 1,480 | | 1971 | 1,426 | | 1970 | 1,399 | | 1969 | 1,421 | | 1968 | 1,459 | | 1967 | 1,481 | | 1966 | 1,494 | | 1965 | 1,496 | | 1964 | 1,488 | | 1963 | 1,473 | | 1962 | 1,453 | | 1961 | 1,435 | | 1960 | 1,445 |
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