| Year | Value | | 2022 | 5,432 | | 2021 | 5,232 | | 2020 | 5,042 | | 2019 | 4,864 | | 2018 | 4,695 | | 2017 | 4,531 | | 2016 | 4,375 | | 2015 | 4,247 | | 2014 | 4,149 | | 2013 | 4,070 | | 2012 | 4,005 | | 2011 | 3,949 | | 2010 | 3,895 | | 2009 | 3,822 | | 2008 | 3,734 | | 2007 | 3,646 | | 2006 | 3,552 | | 2005 | 3,450 | | 2004 | 3,338 | | 2003 | 3,228 | | 2002 | 3,109 | | 2001 | 2,966 | | 2000 | 2,818 | | 1999 | 2,684 | | 1998 | 2,552 | | 1997 | 2,432 | | 1996 | 2,344 | | 1995 | 2,277 | | 1994 | 2,217 | | 1993 | 2,156 | | 1992 | 2,096 | | 1991 | 2,032 | | 1990 | 1,966 | | 1989 | 1,905 | | 1988 | 1,853 | | 1987 | 1,811 | | 1986 | 1,780 | | 1985 | 1,764 | | 1984 | 1,759 | | 1983 | 1,759 | | 1982 | 1,760 | | 1981 | 1,757 | | 1980 | 1,748 | | 1979 | 1,768 | | 1978 | 1,780 | | 1977 | 1,736 | | 1976 | 1,679 | | 1975 | 1,624 | | 1974 | 1,568 | | 1973 | 1,516 | | 1972 | 1,467 | | 1971 | 1,418 | | 1970 | 1,369 | | 1969 | 1,320 | | 1968 | 1,272 | | 1967 | 1,227 | | 1966 | 1,181 | | 1965 | 1,136 | | 1964 | 1,093 | | 1963 | 1,054 | | 1962 | 1,023 | | 1961 | 999 | | 1960 | 982 |
|