Year | Value | 2022 | 27,188 | 2021 | 25,419 | 2020 | 23,793 | 2019 | 22,343 | 2018 | 21,105 | 2017 | 20,110 | 2016 | 19,321 | 2015 | 18,691 | 2014 | 18,174 | 2013 | 17,750 | 2012 | 17,408 | 2011 | 17,131 | 2010 | 16,900 | 2009 | 16,694 | 2008 | 16,507 | 2007 | 16,314 | 2006 | 16,101 | 2005 | 15,866 | 2004 | 15,588 | 2003 | 15,264 | 2002 | 14,909 | 2001 | 14,537 | 2000 | 14,168 | 1999 | 13,839 | 1998 | 13,556 | 1997 | 13,296 | 1996 | 13,057 | 1995 | 12,834 | 1994 | 12,599 | 1993 | 12,344 | 1992 | 12,117 | 1991 | 11,976 | 1990 | 11,916 | 1989 | 11,885 | 1988 | 11,854 | 1987 | 11,820 | 1986 | 11,778 | 1985 | 11,718 | 1984 | 11,631 | 1983 | 11,515 | 1982 | 11,373 | 1981 | 11,211 | 1980 | 11,039 | 1979 | 10,999 | 1978 | 11,298 | 1977 | 11,857 | 1976 | 12,495 | 1975 | 13,139 | 1974 | 13,725 | 1973 | 13,969 | 1972 | 13,889 | 1971 | 13,849 | 1970 | 13,774 | 1969 | 13,667 | 1968 | 13,527 | 1967 | 13,282 | 1966 | 13,084 | 1965 | 12,963 | 1964 | 12,868 | 1963 | 12,642 | 1962 | 12,213 | 1961 | 11,694 | 1960 | 11,190 |
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