Year | Value | 2022 | 25,161 | 2021 | 24,306 | 2020 | 23,488 | 2019 | 22,707 | 2018 | 21,994 | 2017 | 21,336 | 2016 | 20,732 | 2015 | 20,170 | 2014 | 19,578 | 2013 | 18,928 | 2012 | 18,307 | 2011 | 17,735 | 2010 | 17,161 | 2009 | 16,644 | 2008 | 16,215 | 2007 | 15,794 | 2006 | 15,378 | 2005 | 15,025 | 2004 | 14,749 | 2003 | 14,551 | 2002 | 14,414 | 2001 | 14,300 | 2000 | 14,190 | 1999 | 14,082 | 1998 | 13,962 | 1997 | 13,827 | 1996 | 13,701 | 1995 | 13,590 | 1994 | 13,484 | 1993 | 13,378 | 1992 | 13,276 | 1991 | 13,176 | 1990 | 13,079 | 1989 | 12,982 | 1988 | 12,887 | 1987 | 12,793 | 1986 | 12,701 | 1985 | 12,609 | 1984 | 12,519 | 1983 | 12,428 | 1982 | 12,338 | 1981 | 12,249 | 1980 | 12,159 | 1979 | 12,069 | 1978 | 11,979 | 1977 | 11,891 | 1976 | 11,802 | 1975 | 11,716 | 1974 | 11,631 | 1973 | 11,545 | 1972 | 11,462 | 1971 | 11,381 | 1970 | 11,298 | 1969 | 11,214 | 1968 | 11,136 | 1967 | 11,066 | 1966 | 10,994 | 1965 | 10,923 | 1964 | 10,854 | 1963 | 10,789 | 1962 | 10,727 | 1961 | 10,666 | 1960 | 10,606 |
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