Year | Value | 2022 | 40,714 | 2021 | 42,012 | 2020 | 43,533 | 2019 | 45,147 | 2018 | 46,510 | 2017 | 47,394 | 2016 | 47,609 | 2015 | 47,171 | 2014 | 46,281 | 2013 | 45,189 | 2012 | 44,062 | 2011 | 43,030 | 2010 | 42,062 | 2009 | 40,964 | 2008 | 39,883 | 2007 | 38,900 | 2006 | 38,002 | 2005 | 37,238 | 2004 | 36,380 | 2003 | 35,151 | 2002 | 33,442 | 2001 | 31,396 | 2000 | 29,271 | 1999 | 27,417 | 1998 | 25,770 | 1997 | 24,276 | 1996 | 22,907 | 1995 | 21,743 | 1994 | 20,687 | 1993 | 19,778 | 1992 | 19,350 | 1991 | 19,188 | 1990 | 19,100 | 1989 | 19,007 | 1988 | 18,796 | 1987 | 18,410 | 1986 | 17,839 | 1985 | 17,280 | 1984 | 16,856 | 1983 | 16,648 | 1982 | 16,899 | 1981 | 17,475 | 1980 | 18,058 | 1979 | 18,391 | 1978 | 18,387 | 1977 | 18,103 | 1976 | 17,432 | 1975 | 16,521 | 1974 | 15,501 | 1973 | 14,528 | 1972 | 13,743 | 1971 | 13,235 | 1970 | 12,989 | 1969 | 12,915 | 1968 | 12,900 | 1967 | 12,837 | 1966 | 12,644 | 1965 | 12,279 | 1964 | 11,792 | 1963 | 11,259 | 1962 | 10,745 | 1961 | 10,312 | 1960 | 10,179 |
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