Year | Value | 2022 | 42,165 | 2021 | 42,889 | 2020 | 43,579 | 2019 | 43,960 | 2018 | 43,889 | 2017 | 43,505 | 2016 | 42,703 | 2015 | 41,586 | 2014 | 40,233 | 2013 | 38,652 | 2012 | 36,979 | 2011 | 35,265 | 2010 | 33,619 | 2009 | 32,094 | 2008 | 30,587 | 2007 | 28,999 | 2006 | 27,361 | 2005 | 25,675 | 2004 | 23,948 | 2003 | 22,319 | 2002 | 20,892 | 2001 | 19,701 | 2000 | 18,920 | 1999 | 18,317 | 1998 | 17,816 | 1997 | 17,312 | 1996 | 16,765 | 1995 | 16,169 | 1994 | 15,558 | 1993 | 15,013 | 1992 | 14,607 | 1991 | 14,346 | 1990 | 14,199 | 1989 | 13,767 | 1988 | 13,199 | 1987 | 12,678 | 1986 | 12,085 | 1985 | 11,455 | 1984 | 10,790 | 1983 | 10,144 | 1982 | 9,562 | 1981 | 9,088 | 1980 | 8,767 | 1979 | 8,623 | 1978 | 8,647 | 1977 | 8,739 | 1976 | 8,800 | 1975 | 8,752 | 1974 | 8,512 | 1973 | 8,105 | 1972 | 7,618 | 1971 | 7,158 | 1970 | 6,836 | 1969 | 6,706 | 1968 | 6,756 | 1967 | 6,948 | 1966 | 7,212 | 1965 | 7,449 | 1964 | 7,563 | 1963 | 7,535 | 1962 | 7,399 | 1961 | 7,193 | 1960 | 6,970 |
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