| Year | Value | | 2022 | 14,825 | | 2021 | 14,224 | | 2020 | 14,391 | | 2019 | 13,712 | | 2018 | 11,794 | | 2017 | 10,082 | | 2016 | 8,910 | | 2015 | 7,591 | | 2014 | 6,432 | | 2013 | 5,889 | | 2012 | 5,241 | | 2011 | 4,587 | | 2010 | 4,164 | | 2009 | 3,961 | | 2008 | 3,804 | | 2007 | 3,680 | | 2006 | 3,534 | | 2005 | 3,357 | | 2004 | 3,149 | | 2003 | 2,936 | | 2002 | 2,750 | | 2001 | 2,595 | | 2000 | 2,461 | | 1999 | 2,335 | | 1998 | 2,213 | | 1997 | 2,089 | | 1996 | 1,965 | | 1995 | 1,894 | | 1994 | 1,934 | | 1993 | 2,003 | | 1992 | 1,938 | | 1991 | 1,559 | | 1990 | 1,762 | | 1989 | 2,126 | | 1988 | 1,847 | | 1987 | 1,564 | | 1986 | 1,323 | | 1985 | 1,188 | | 1984 | 1,140 | | 1983 | 1,157 | | 1982 | 1,230 | | 1981 | 1,313 | | 1980 | 1,377 | | 1979 | 1,422 | | 1978 | 1,460 | | 1977 | 1,483 | | 1976 | 1,500 | | 1975 | 1,479 | | 1974 | 1,419 | | 1973 | 1,353 | | 1972 | 1,285 | | 1971 | 1,224 | | 1970 | 1,156 | | 1969 | 1,071 | | 1968 | 984 | | 1967 | 906 | | 1966 | 835 | | 1965 | 785 | | 1964 | 759 | | 1963 | 738 | | 1962 | 721 | | 1961 | 704 | | 1960 | 685 |
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