| Year | Value | | 2022 | 5,611 | | 2021 | 5,506 | | 2020 | 5,305 | | 2019 | 5,031 | | 2018 | 4,800 | | 2017 | 4,618 | | 2016 | 4,463 | | 2015 | 4,304 | | 2014 | 4,144 | | 2013 | 3,976 | | 2012 | 3,785 | | 2011 | 3,575 | | 2010 | 3,357 | | 2009 | 3,157 | | 2008 | 3,001 | | 2007 | 2,888 | | 2006 | 2,803 | | 2005 | 2,709 | | 2004 | 2,607 | | 2003 | 2,429 | | 2002 | 2,193 | | 2001 | 1,998 | | 2000 | 1,831 | | 1999 | 1,687 | | 1998 | 1,571 | | 1997 | 1,486 | | 1996 | 1,426 | | 1995 | 1,386 | | 1994 | 1,380 | | 1993 | 1,403 | | 1992 | 1,435 | | 1991 | 1,471 | | 1990 | 1,509 | | 1989 | 1,541 | | 1988 | 1,566 | | 1987 | 1,598 | | 1986 | 1,634 | | 1985 | 1,670 | | 1984 | 1,715 | | 1983 | 1,773 | | 1982 | 1,845 | | 1981 | 1,929 | | 1980 | 2,026 | | 1979 | 2,026 | | 1978 | 1,921 | | 1977 | 1,821 | | 1976 | 1,727 | | 1975 | 1,644 | | 1974 | 1,580 | | 1973 | 1,533 | | 1972 | 1,506 | | 1971 | 1,465 | | 1970 | 1,395 | | 1969 | 1,329 | | 1968 | 1,266 | | 1967 | 1,207 | | 1966 | 1,149 | | 1965 | 1,096 | | 1964 | 1,024 | | 1963 | 868 | | 1962 | 682 | | 1961 | 571 | | 1960 | 517 |
|