Year | Value | 2022 | 25,005 | 2021 | 25,400 | 2020 | 25,648 | 2019 | 25,432 | 2018 | 25,233 | 2017 | 25,257 | 2016 | 25,407 | 2015 | 25,611 | 2014 | 25,848 | 2013 | 26,076 | 2012 | 26,225 | 2011 | 26,256 | 2010 | 26,143 | 2009 | 25,878 | 2008 | 25,485 | 2007 | 25,037 | 2006 | 24,649 | 2005 | 24,315 | 2004 | 23,988 | 2003 | 23,740 | 2002 | 23,636 | 2001 | 23,658 | 2000 | 23,665 | 1999 | 23,588 | 1998 | 23,406 | 1997 | 23,190 | 1996 | 22,970 | 1995 | 22,735 | 1994 | 21,539 | 1993 | 19,468 | 1992 | 17,881 | 1991 | 16,823 | 1990 | 15,966 | 1989 | 15,204 | 1988 | 14,522 | 1987 | 13,890 | 1986 | 13,327 | 1985 | 12,853 | 1984 | 12,487 | 1983 | 12,172 | 1982 | 11,845 | 1981 | 11,529 | 1980 | 11,233 | 1979 | 10,980 | 1978 | 10,769 | 1977 | 10,544 | 1976 | 10,282 | 1975 | 9,987 | 1974 | 9,669 | 1973 | 9,334 | 1972 | 8,984 | 1971 | 8,639 | 1970 | 8,309 | 1969 | 7,992 | 1968 | 7,694 | 1967 | 7,409 | 1966 | 7,127 | 1965 | 6,838 | 1964 | 6,542 | 1963 | 6,238 | 1962 | 5,927 | 1961 | 5,618 | 1960 | 5,316 |
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