Year | Value | 2022 | 52,477 | 2021 | 50,218 | 2020 | 47,979 | 2019 | 45,796 | 2018 | 43,802 | 2017 | 42,147 | 2016 | 40,939 | 2015 | 40,183 | 2014 | 39,764 | 2013 | 39,529 | 2012 | 39,306 | 2011 | 38,935 | 2010 | 38,359 | 2009 | 37,705 | 2008 | 37,140 | 2007 | 36,767 | 2006 | 36,614 | 2005 | 36,619 | 2004 | 36,643 | 2003 | 36,540 | 2002 | 36,196 | 2001 | 35,481 | 2000 | 34,407 | 1999 | 33,157 | 1998 | 31,897 | 1997 | 30,753 | 1996 | 29,807 | 1995 | 29,049 | 1994 | 28,409 | 1993 | 27,809 | 1992 | 27,229 | 1991 | 26,660 | 1990 | 26,069 | 1989 | 25,449 | 1988 | 24,803 | 1987 | 24,114 | 1986 | 23,365 | 1985 | 22,567 | 1984 | 21,747 | 1983 | 20,932 | 1982 | 20,021 | 1981 | 18,998 | 1980 | 18,149 | 1979 | 17,623 | 1978 | 17,314 | 1977 | 17,052 | 1976 | 16,703 | 1975 | 16,351 | 1974 | 16,249 | 1973 | 16,127 | 1972 | 15,876 | 1971 | 15,774 | 1970 | 15,765 | 1969 | 15,775 | 1968 | 15,750 | 1967 | 15,666 | 1966 | 15,545 | 1965 | 15,437 | 1964 | 15,378 | 1963 | 15,359 | 1962 | 15,352 | 1961 | 15,341 | 1960 | 15,270 |
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