| Year | Value | | 2022 | 5,930 | | 2021 | 5,658 | | 2020 | 5,369 | | 2019 | 5,064 | | 2018 | 4,763 | | 2017 | 4,485 | | 2016 | 4,233 | | 2015 | 3,998 | | 2014 | 3,786 | | 2013 | 3,586 | | 2012 | 3,381 | | 2011 | 3,170 | | 2010 | 2,963 | | 2009 | 2,744 | | 2008 | 2,529 | | 2007 | 2,345 | | 2006 | 2,211 | | 2005 | 2,126 | | 2004 | 2,073 | | 2003 | 2,041 | | 2002 | 2,015 | | 2001 | 1,989 | | 2000 | 1,960 | | 1999 | 1,917 | | 1998 | 1,854 | | 1997 | 1,791 | | 1996 | 1,736 | | 1995 | 1,690 | | 1994 | 1,674 | | 1993 | 1,683 | | 1992 | 1,688 | | 1991 | 1,671 | | 1990 | 1,643 | | 1989 | 1,605 | | 1988 | 1,553 | | 1987 | 1,505 | | 1986 | 1,457 | | 1985 | 1,409 | | 1984 | 1,371 | | 1983 | 1,347 | | 1982 | 1,331 | | 1981 | 1,321 | | 1980 | 1,317 | | 1979 | 1,318 | | 1978 | 1,326 | | 1977 | 1,340 | | 1976 | 1,356 | | 1975 | 1,369 | | 1974 | 1,381 | | 1973 | 1,390 | | 1972 | 1,380 | | 1971 | 1,353 | | 1970 | 1,313 | | 1969 | 1,267 | | 1968 | 1,224 | | 1967 | 1,194 | | 1966 | 1,173 | | 1965 | 1,156 | | 1964 | 1,138 | | 1963 | 1,117 | | 1962 | 1,096 | | 1961 | 1,073 | | 1960 | 1,044 |
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