Year | Value | 2022 | 53,090 | 2021 | 52,889 | 2020 | 52,415 | 2019 | 51,681 | 2018 | 50,955 | 2017 | 50,230 | 2016 | 49,500 | 2015 | 48,816 | 2014 | 48,465 | 2013 | 48,418 | 2012 | 48,392 | 2011 | 48,386 | 2010 | 48,410 | 2009 | 48,429 | 2008 | 48,411 | 2007 | 48,361 | 2006 | 48,313 | 2005 | 48,291 | 2004 | 47,989 | 2003 | 47,392 | 2002 | 46,813 | 2001 | 46,245 | 2000 | 45,660 | 1999 | 45,203 | 1998 | 44,865 | 1997 | 44,495 | 1996 | 44,138 | 1995 | 43,805 | 1994 | 44,131 | 1993 | 45,096 | 1992 | 46,005 | 1991 | 46,810 | 1990 | 47,479 | 1989 | 47,490 | 1988 | 46,959 | 1987 | 46,477 | 1986 | 46,011 | 1985 | 45,575 | 1984 | 45,135 | 1983 | 44,669 | 1982 | 44,164 | 1981 | 43,613 | 1980 | 43,054 | 1979 | 42,506 | 1978 | 41,965 | 1977 | 41,481 | 1976 | 41,054 | 1975 | 40,626 | 1974 | 40,189 | 1973 | 39,746 | 1972 | 39,304 | 1971 | 38,861 | 1970 | 38,416 | 1969 | 38,011 | 1968 | 37,630 | 1967 | 37,234 | 1966 | 36,825 | 1965 | 36,346 | 1964 | 35,841 | 1963 | 35,385 | 1962 | 34,963 | 1961 | 34,572 | 1960 | 34,154 |
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