Year | Value | 2022 | 37,374 | 2021 | 37,744 | 2020 | 38,118 | 2019 | 38,563 | 2018 | 39,063 | 2017 | 39,457 | 2016 | 39,692 | 2015 | 39,921 | 2014 | 40,337 | 2013 | 40,816 | 2012 | 41,249 | 2011 | 41,670 | 2010 | 41,952 | 2009 | 41,944 | 2008 | 41,681 | 2007 | 41,089 | 2006 | 40,152 | 2005 | 38,934 | 2004 | 37,433 | 2003 | 35,843 | 2002 | 34,435 | 2001 | 33,341 | 2000 | 32,600 | 1999 | 32,261 | 1998 | 32,188 | 1997 | 32,148 | 1996 | 32,244 | 1995 | 32,660 | 1994 | 33,280 | 1993 | 33,949 | 1992 | 34,632 | 1991 | 35,142 | 1990 | 35,305 | 1989 | 35,223 | 1988 | 34,973 | 1987 | 34,489 | 1986 | 33,989 | 1985 | 33,297 | 1984 | 32,155 | 1983 | 30,795 | 1982 | 29,351 | 1981 | 27,838 | 1980 | 26,260 | 1979 | 24,953 | 1978 | 23,981 | 1977 | 23,141 | 1976 | 22,477 | 1975 | 21,992 | 1974 | 21,391 | 1973 | 20,670 | 1972 | 20,079 | 1971 | 19,568 | 1970 | 19,130 | 1969 | 18,768 | 1968 | 18,409 | 1967 | 18,000 | 1966 | 17,557 | 1965 | 17,085 | 1964 | 16,586 | 1963 | 16,084 | 1962 | 15,591 | 1961 | 15,108 | 1960 | 14,634 |
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