| Year | Value | | 2022 | 9,586 | | 2021 | 9,130 | | 2020 | 8,695 | | 2019 | 8,276 | | 2018 | 7,888 | | 2017 | 7,519 | | 2016 | 7,145 | | 2015 | 6,784 | | 2014 | 6,470 | | 2013 | 6,203 | | 2012 | 5,982 | | 2011 | 5,833 | | 2010 | 5,729 | | 2009 | 5,636 | | 2008 | 5,539 | | 2007 | 5,427 | | 2006 | 5,299 | | 2005 | 5,163 | | 2004 | 5,010 | | 2003 | 4,836 | | 2002 | 4,660 | | 2001 | 4,490 | | 2000 | 4,323 | | 1999 | 4,169 | | 1998 | 4,030 | | 1997 | 3,905 | | 1996 | 3,790 | | 1995 | 3,683 | | 1994 | 3,575 | | 1993 | 3,467 | | 1992 | 3,360 | | 1991 | 3,253 | | 1990 | 3,145 | | 1989 | 3,043 | | 1988 | 2,947 | | 1987 | 2,853 | | 1986 | 2,759 | | 1985 | 2,670 | | 1984 | 2,583 | | 1983 | 2,498 | | 1982 | 2,415 | | 1981 | 2,335 | | 1980 | 2,256 | | 1979 | 2,175 | | 1978 | 2,094 | | 1977 | 2,011 | | 1976 | 1,926 | | 1975 | 1,846 | | 1974 | 1,782 | | 1973 | 1,726 | | 1972 | 1,680 | | 1971 | 1,645 | | 1970 | 1,602 | | 1969 | 1,554 | | 1968 | 1,511 | | 1967 | 1,471 | | 1966 | 1,434 | | 1965 | 1,397 | | 1964 | 1,360 | | 1963 | 1,322 | | 1962 | 1,283 | | 1961 | 1,242 | | 1960 | 1,202 |
|