Year | Value | 2022 | 42,279 | 2021 | 42,049 | 2020 | 41,859 | 2019 | 41,890 | 2018 | 41,784 | 2017 | 40,878 | 2016 | 39,544 | 2015 | 38,244 | 2014 | 37,020 | 2013 | 35,936 | 2012 | 35,011 | 2011 | 34,198 | 2010 | 33,424 | 2009 | 32,648 | 2008 | 31,904 | 2007 | 31,249 | 2006 | 30,744 | 2005 | 30,300 | 2004 | 29,748 | 2003 | 29,015 | 2002 | 28,122 | 2001 | 26,814 | 2000 | 25,551 | 1999 | 25,187 | 1998 | 25,308 | 1997 | 25,336 | 1996 | 25,268 | 1995 | 25,398 | 1994 | 25,614 | 1993 | 25,754 | 1992 | 26,022 | 1991 | 26,725 | 1990 | 26,624 | 1989 | 25,807 | 1988 | 25,366 | 1987 | 24,875 | 1986 | 24,385 | 1985 | 23,945 | 1984 | 23,552 | 1983 | 23,158 | 1982 | 22,767 | 1981 | 22,377 | 1980 | 21,990 | 1979 | 21,608 | 1978 | 21,228 | 1977 | 20,850 | 1976 | 20,473 | 1975 | 20,097 | 1974 | 19,726 | 1973 | 19,362 | 1972 | 19,006 | 1971 | 18,654 | 1970 | 18,303 | 1969 | 17,951 | 1968 | 17,590 | 1967 | 17,218 | 1966 | 16,837 | 1965 | 16,447 | 1964 | 16,048 | 1963 | 15,646 | 1962 | 15,251 | 1961 | 14,865 | 1960 | 14,487 |
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