Year | Value | 2022 | 27,894 | 2021 | 27,899 | 2020 | 27,709 | 2019 | 26,909 | 2018 | 25,644 | 2017 | 24,331 | 2016 | 23,043 | 2015 | 21,964 | 2014 | 21,122 | 2013 | 20,393 | 2012 | 19,844 | 2011 | 19,647 | 2010 | 19,509 | 2009 | 19,165 | 2008 | 18,807 | 2007 | 18,369 | 2006 | 17,911 | 2005 | 17,476 | 2004 | 16,981 | 2003 | 16,456 | 2002 | 15,940 | 2001 | 15,427 | 2000 | 14,893 | 1999 | 14,377 | 1998 | 13,876 | 1997 | 13,391 | 1996 | 13,018 | 1995 | 12,639 | 1994 | 12,283 | 1993 | 11,760 | 1992 | 11,781 | 1991 | 13,047 | 1990 | 13,940 | 1989 | 14,049 | 1988 | 14,378 | 1987 | 14,451 | 1986 | 13,979 | 1985 | 13,447 | 1984 | 12,936 | 1983 | 12,488 | 1982 | 12,110 | 1981 | 12,075 | 1980 | 11,976 | 1979 | 10,975 | 1978 | 9,668 | 1977 | 8,963 | 1976 | 8,683 | 1975 | 8,426 | 1974 | 8,170 | 1973 | 7,884 | 1972 | 7,569 | 1971 | 7,262 | 1970 | 6,960 | 1969 | 6,662 | 1968 | 6,368 | 1967 | 6,078 | 1966 | 5,789 | 1965 | 5,499 | 1964 | 5,211 | 1963 | 4,918 | 1962 | 4,623 | 1961 | 4,332 | 1960 | 4,047 |
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