Year | Value | 2022 | 44,231 | 2021 | 42,321 | 2020 | 40,310 | 2019 | 38,282 | 2018 | 36,294 | 2017 | 34,396 | 2016 | 32,643 | 2015 | 31,106 | 2014 | 29,854 | 2013 | 28,926 | 2012 | 28,292 | 2011 | 27,872 | 2010 | 27,598 | 2009 | 27,398 | 2008 | 27,217 | 2007 | 27,026 | 2006 | 26,802 | 2005 | 26,512 | 2004 | 26,121 | 2003 | 25,604 | 2002 | 24,958 | 2001 | 24,189 | 2000 | 23,308 | 1999 | 22,327 | 1998 | 21,256 | 1997 | 20,123 | 1996 | 18,961 | 1995 | 17,809 | 1994 | 16,695 | 1993 | 15,637 | 1992 | 14,709 | 1991 | 13,998 | 1990 | 13,682 | 1989 | 13,677 | 1988 | 13,744 | 1987 | 13,862 | 1986 | 14,001 | 1985 | 14,139 | 1984 | 14,250 | 1983 | 14,322 | 1982 | 14,345 | 1981 | 14,318 | 1980 | 14,243 | 1979 | 14,376 | 1978 | 14,516 | 1977 | 14,459 | 1976 | 14,431 | 1975 | 14,417 | 1974 | 14,419 | 1973 | 14,242 | 1972 | 13,886 | 1971 | 13,640 | 1970 | 13,355 | 1969 | 13,047 | 1968 | 12,719 | 1967 | 12,287 | 1966 | 12,012 | 1965 | 11,972 | 1964 | 12,073 | 1963 | 12,067 | 1962 | 11,902 | 1961 | 11,707 | 1960 | 11,713 |
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