Year | Value | 2022 | 45,024 | 2021 | 44,723 | 2020 | 44,459 | 2019 | 44,262 | 2018 | 44,056 | 2017 | 43,844 | 2016 | 43,680 | 2015 | 43,673 | 2014 | 43,762 | 2013 | 43,836 | 2012 | 43,895 | 2011 | 43,872 | 2010 | 43,586 | 2009 | 43,096 | 2008 | 42,604 | 2007 | 42,123 | 2006 | 41,656 | 2005 | 41,220 | 2004 | 40,823 | 2003 | 40,426 | 2002 | 40,020 | 2001 | 39,599 | 2000 | 39,158 | 1999 | 38,689 | 1998 | 38,196 | 1997 | 37,707 | 1996 | 37,280 | 1995 | 37,001 | 1994 | 36,807 | 1993 | 36,602 | 1992 | 36,387 | 1991 | 36,102 | 1990 | 35,635 | 1989 | 35,055 | 1988 | 34,487 | 1987 | 33,929 | 1986 | 33,470 | 1985 | 33,324 | 1984 | 33,391 | 1983 | 33,444 | 1982 | 33,475 | 1981 | 33,428 | 1980 | 33,153 | 1979 | 32,716 | 1978 | 32,283 | 1977 | 31,857 | 1976 | 31,443 | 1975 | 31,415 | 1974 | 31,480 | 1973 | 31,486 | 1972 | 31,448 | 1971 | 31,351 | 1970 | 30,873 | 1969 | 30,291 | 1968 | 29,709 | 1967 | 29,130 | 1966 | 28,640 | 1965 | 28,185 | 1964 | 27,807 | 1963 | 27,428 | 1962 | 27,053 | 1961 | 26,799 | 1960 | 26,896 |
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