Year | Value | 2022 | 42,430 | 2021 | 41,394 | 2020 | 39,885 | 2019 | 38,597 | 2018 | 38,349 | 2017 | 39,679 | 2016 | 41,032 | 2015 | 41,437 | 2014 | 41,575 | 2013 | 40,940 | 2012 | 39,060 | 2011 | 37,827 | 2010 | 37,418 | 2009 | 36,147 | 2008 | 35,103 | 2007 | 34,251 | 2006 | 32,984 | 2005 | 31,565 | 2004 | 30,349 | 2003 | 29,229 | 2002 | 28,162 | 2001 | 27,153 | 2000 | 26,213 | 1999 | 25,307 | 1998 | 24,423 | 1997 | 23,543 | 1996 | 22,583 | 1995 | 21,514 | 1994 | 20,365 | 1993 | 19,132 | 1992 | 17,836 | 1991 | 16,610 | 1990 | 15,539 | 1989 | 14,609 | 1988 | 13,812 | 1987 | 13,166 | 1986 | 12,634 | 1985 | 12,185 | 1984 | 11,835 | 1983 | 11,599 | 1982 | 11,454 | 1981 | 11,330 | 1980 | 11,169 | 1979 | 10,963 | 1978 | 10,693 | 1977 | 10,373 | 1976 | 10,108 | 1975 | 9,980 | 1974 | 9,975 | 1973 | 10,096 | 1972 | 10,314 | 1971 | 10,523 | 1970 | 10,679 | 1969 | 10,792 | 1968 | 10,864 | 1967 | 10,890 | 1966 | 10,879 | 1965 | 10,831 | 1964 | 10,742 | 1963 | 10,618 | 1962 | 10,486 | 1961 | 10,373 | 1960 | 10,299 |
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