Year | Value | 2022 | 34,653 | 2021 | 32,949 | 2020 | 30,604 | 2019 | 27,259 | 2018 | 23,555 | 2017 | 20,564 | 2016 | 19,417 | 2015 | 21,067 | 2014 | 25,322 | 2013 | 30,995 | 2012 | 36,413 | 2011 | 40,086 | 2010 | 41,511 | 2009 | 41,078 | 2008 | 39,596 | 2007 | 37,963 | 2006 | 36,871 | 2005 | 36,797 | 2004 | 38,006 | 2003 | 39,971 | 2002 | 41,649 | 2001 | 42,454 | 2000 | 42,015 | 1999 | 40,242 | 1998 | 37,179 | 1997 | 32,856 | 1996 | 27,938 | 1995 | 23,321 | 1994 | 19,370 | 1993 | 16,315 | 1992 | 14,389 | 1991 | 13,328 | 1990 | 12,938 | 1989 | 13,139 | 1988 | 14,025 | 1987 | 15,517 | 1986 | 17,280 | 1985 | 18,999 | 1984 | 20,326 | 1983 | 21,224 | 1982 | 21,707 | 1981 | 21,801 | 1980 | 21,571 | 1979 | 21,105 | 1978 | 20,503 | 1977 | 19,808 | 1976 | 18,997 | 1975 | 18,071 | 1974 | 17,077 | 1973 | 16,039 | 1972 | 15,004 | 1971 | 14,054 | 1970 | 13,240 | 1969 | 12,565 | 1968 | 12,045 | 1967 | 11,723 | 1966 | 11,672 | 1965 | 11,967 | 1964 | 12,627 | 1963 | 13,656 | 1962 | 14,895 | 1961 | 16,007 | 1960 | 16,740 |
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