Year | Value | 2022 | 49,707 | 2021 | 49,575 | 2020 | 49,198 | 2019 | 48,945 | 2018 | 48,637 | 2017 | 48,630 | 2016 | 48,503 | 2015 | 48,298 | 2014 | 48,308 | 2013 | 48,322 | 2012 | 48,402 | 2011 | 48,217 | 2010 | 48,018 | 2009 | 47,360 | 2008 | 47,196 | 2007 | 47,213 | 2006 | 47,220 | 2005 | 47,175 | 2004 | 46,997 | 2003 | 46,739 | 2002 | 46,473 | 2001 | 46,122 | 2000 | 45,859 | 1999 | 45,708 | 1998 | 45,638 | 1997 | 45,487 | 1996 | 45,335 | 1995 | 45,143 | 1994 | 44,790 | 1993 | 44,438 | 1992 | 44,406 | 1991 | 44,418 | 1990 | 44,312 | 1989 | 43,886 | 1988 | 43,301 | 1987 | 42,559 | 1986 | 41,900 | 1985 | 41,475 | 1984 | 40,896 | 1983 | 40,240 | 1982 | 39,588 | 1981 | 39,013 | 1980 | 38,213 | 1979 | 37,567 | 1978 | 37,075 | 1977 | 37,033 | 1976 | 37,089 | 1975 | 36,897 | 1974 | 36,705 | 1973 | 36,218 | 1972 | 35,585 | 1971 | 34,660 | 1970 | 33,753 | 1969 | 32,095 | 1968 | 30,461 | 1967 | 28,849 | 1966 | 27,334 | 1965 | 25,892 | 1964 | 24,265 | 1963 | 22,926 | 1962 | 21,492 | 1961 | 20,155 | 1960 | 19,024 |
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