Year | Value | 2022 | 46,891 | 2021 | 46,734 | 2020 | 46,574 | 2019 | 46,351 | 2018 | 45,999 | 2017 | 45,648 | 2016 | 45,297 | 2015 | 44,943 | 2014 | 44,588 | 2013 | 44,228 | 2012 | 43,864 | 2011 | 43,493 | 2010 | 43,206 | 2009 | 43,079 | 2008 | 42,906 | 2007 | 42,729 | 2006 | 42,555 | 2005 | 42,399 | 2004 | 42,317 | 2003 | 42,277 | 2002 | 42,194 | 2001 | 42,025 | 2000 | 41,625 | 1999 | 40,938 | 1998 | 40,099 | 1997 | 39,248 | 1996 | 38,403 | 1995 | 37,575 | 1994 | 36,740 | 1993 | 35,882 | 1992 | 35,095 | 1991 | 34,138 | 1990 | 33,066 | 1989 | 32,514 | 1988 | 32,391 | 1987 | 32,460 | 1986 | 32,522 | 1985 | 32,494 | 1984 | 32,351 | 1983 | 32,113 | 1982 | 31,836 | 1981 | 31,593 | 1980 | 31,427 | 1979 | 31,305 | 1978 | 31,179 | 1977 | 31,050 | 1976 | 30,922 | 1975 | 30,690 | 1974 | 30,352 | 1973 | 30,026 | 1972 | 29,777 | 1971 | 29,766 | 1970 | 29,922 | 1969 | 30,044 | 1968 | 30,124 | 1967 | 30,160 | 1966 | 30,052 | 1965 | 29,802 | 1964 | 29,505 | 1963 | 29,157 | 1962 | 28,764 | 1961 | 28,330 | 1960 | 27,728 |
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