Year | Value | 2022 | 17,586 | 2021 | 16,895 | 2020 | 16,218 | 2019 | 15,600 | 2018 | 15,086 | 2017 | 14,684 | 2016 | 14,403 | 2015 | 14,256 | 2014 | 14,097 | 2013 | 13,875 | 2012 | 13,745 | 2011 | 13,789 | 2010 | 14,194 | 2009 | 14,849 | 2008 | 15,108 | 2007 | 14,546 | 2006 | 13,211 | 2005 | 11,378 | 2004 | 9,928 | 2003 | 9,652 | 2002 | 10,111 | 2001 | 10,645 | 2000 | 11,013 | 1999 | 11,073 | 1998 | 10,793 | 1997 | 10,282 | 1996 | 9,703 | 1995 | 9,179 | 1994 | 8,771 | 1993 | 8,473 | 1992 | 8,231 | 1991 | 7,988 | 1990 | 7,873 | 1989 | 7,922 | 1988 | 8,000 | 1987 | 8,071 | 1986 | 8,131 | 1985 | 8,179 | 1984 | 8,219 | 1983 | 8,263 | 1982 | 8,313 | 1981 | 8,366 | 1980 | 8,358 | 1979 | 8,295 | 1978 | 8,245 | 1977 | 8,197 | 1976 | 8,133 | 1975 | 8,035 | 1974 | 7,852 | 1973 | 7,555 | 1972 | 7,205 | 1971 | 6,861 | 1970 | 6,550 | 1969 | 6,262 | 1968 | 5,984 | 1967 | 5,741 | 1966 | 5,595 | 1965 | 5,580 | 1964 | 5,692 | 1963 | 5,941 | 1962 | 6,280 | 1961 | 6,574 | 1960 | 6,725 |
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