Year | Value | 2022 | 39,286 | 2021 | 39,978 | 2020 | 40,732 | 2019 | 41,001 | 2018 | 41,037 | 2017 | 40,962 | 2016 | 40,586 | 2015 | 40,294 | 2014 | 40,233 | 2013 | 40,240 | 2012 | 40,292 | 2011 | 40,269 | 2010 | 40,187 | 2009 | 40,058 | 2008 | 39,893 | 2007 | 39,703 | 2006 | 39,502 | 2005 | 39,291 | 2004 | 39,055 | 2003 | 38,727 | 2002 | 38,189 | 2001 | 37,596 | 2000 | 36,983 | 1999 | 36,219 | 1998 | 35,268 | 1997 | 34,426 | 1996 | 33,578 | 1995 | 32,878 | 1994 | 32,184 | 1993 | 31,011 | 1992 | 29,722 | 1991 | 28,429 | 1990 | 27,210 | 1989 | 26,030 | 1988 | 24,867 | 1987 | 23,745 | 1986 | 22,648 | 1985 | 21,608 | 1984 | 20,626 | 1983 | 19,687 | 1982 | 18,775 | 1981 | 17,886 | 1980 | 17,064 | 1979 | 16,279 | 1978 | 15,381 | 1977 | 14,351 | 1976 | 13,317 | 1975 | 12,322 | 1974 | 11,459 | 1973 | 10,953 | 1972 | 10,884 | 1971 | 11,016 | 1970 | 11,173 | 1969 | 11,326 | 1968 | 11,446 | 1967 | 11,549 | 1966 | 11,658 | 1965 | 11,766 | 1964 | 11,868 | 1963 | 11,963 | 1962 | 12,052 | 1961 | 12,134 | 1960 | 12,202 |
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