| Year | Value | | 2022 | 9,074 | | 2021 | 8,911 | | 2020 | 8,703 | | 2019 | 8,429 | | 2018 | 8,118 | | 2017 | 7,793 | | 2016 | 7,459 | | 2015 | 7,139 | | 2014 | 6,838 | | 2013 | 6,540 | | 2012 | 6,241 | | 2011 | 5,945 | | 2010 | 5,642 | | 2009 | 5,347 | | 2008 | 5,099 | | 2007 | 4,896 | | 2006 | 4,721 | | 2005 | 4,570 | | 2004 | 4,444 | | 2003 | 4,316 | | 2002 | 4,191 | | 2001 | 4,072 | | 2000 | 3,944 | | 1999 | 3,810 | | 1998 | 3,672 | | 1997 | 3,533 | | 1996 | 3,390 | | 1995 | 3,243 | | 1994 | 3,090 | | 1993 | 2,932 | | 1992 | 2,772 | | 1991 | 2,614 | | 1990 | 2,466 | | 1989 | 2,336 | | 1988 | 2,241 | | 1987 | 2,187 | | 1986 | 2,159 | | 1985 | 2,149 | | 1984 | 2,139 | | 1983 | 2,089 | | 1982 | 1,992 | | 1981 | 1,865 | | 1980 | 1,709 | | 1979 | 1,549 | | 1978 | 1,409 | | 1977 | 1,312 | | 1976 | 1,272 | | 1975 | 1,287 | | 1974 | 1,335 | | 1973 | 1,387 | | 1972 | 1,426 | | 1971 | 1,437 | | 1970 | 1,414 | | 1969 | 1,364 | | 1968 | 1,305 | | 1967 | 1,246 | | 1966 | 1,194 | | 1965 | 1,155 | | 1964 | 1,124 | | 1963 | 1,089 | | 1962 | 1,045 | | 1961 | 990 | | 1960 | 923 |
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