Year | Value | 2022 | 37,068 | 2021 | 37,032 | 2020 | 36,776 | 2019 | 36,455 | 2018 | 36,048 | 2017 | 35,460 | 2016 | 34,587 | 2015 | 33,561 | 2014 | 32,676 | 2013 | 31,999 | 2012 | 31,540 | 2011 | 31,234 | 2010 | 30,973 | 2009 | 30,639 | 2008 | 30,121 | 2007 | 29,364 | 2006 | 28,405 | 2005 | 27,329 | 2004 | 26,258 | 2003 | 25,178 | 2002 | 24,351 | 2001 | 23,885 | 2000 | 23,485 | 1999 | 23,093 | 1998 | 22,545 | 1997 | 21,871 | 1996 | 21,248 | 1995 | 20,673 | 1994 | 20,147 | 1993 | 19,674 | 1992 | 19,224 | 1991 | 18,729 | 1990 | 18,198 | 1989 | 17,680 | 1988 | 17,195 | 1987 | 16,757 | 1986 | 16,353 | 1985 | 15,973 | 1984 | 15,617 | 1983 | 15,280 | 1982 | 14,956 | 1981 | 14,609 | 1980 | 14,192 | 1979 | 13,697 | 1978 | 13,150 | 1977 | 12,574 | 1976 | 11,969 | 1975 | 11,363 | 1974 | 10,691 | 1973 | 9,969 | 1972 | 9,359 | 1971 | 8,912 | 1970 | 8,597 | 1969 | 8,473 | 1968 | 8,525 | 1967 | 8,590 | 1966 | 8,604 | 1965 | 8,570 | 1964 | 8,511 | 1963 | 8,431 | 1962 | 8,334 | 1961 | 8,225 | 1960 | 8,101 |
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