Year | Value | 2022 | 42,877 | 2021 | 43,451 | 2020 | 44,118 | 2019 | 44,836 | 2018 | 45,558 | 2017 | 46,182 | 2016 | 46,655 | 2015 | 47,061 | 2014 | 47,518 | 2013 | 48,061 | 2012 | 48,658 | 2011 | 49,190 | 2010 | 49,417 | 2009 | 49,319 | 2008 | 49,016 | 2007 | 48,705 | 2006 | 48,423 | 2005 | 48,123 | 2004 | 47,860 | 2003 | 47,587 | 2002 | 47,415 | 2001 | 47,448 | 2000 | 47,646 | 1999 | 47,900 | 1998 | 48,206 | 1997 | 48,592 | 1996 | 49,054 | 1995 | 49,727 | 1994 | 50,567 | 1993 | 51,349 | 1992 | 52,020 | 1991 | 52,582 | 1990 | 52,975 | 1989 | 53,290 | 1988 | 53,596 | 1987 | 53,766 | 1986 | 53,675 | 1985 | 53,208 | 1984 | 52,401 | 1983 | 51,371 | 1982 | 50,144 | 1981 | 48,724 | 1980 | 47,109 | 1979 | 45,274 | 1978 | 43,409 | 1977 | 41,803 | 1976 | 40,732 | 1975 | 40,257 | 1974 | 40,265 | 1973 | 40,546 | 1972 | 40,820 | 1971 | 41,034 | 1970 | 41,226 | 1969 | 41,401 | 1968 | 41,591 | 1967 | 41,773 | 1966 | 41,715 | 1965 | 41,405 | 1964 | 41,010 | 1963 | 40,495 | 1962 | 39,834 | 1961 | 39,136 | 1960 | 38,350 |
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