Year | Value | 2022 | 22,011 | 2021 | 22,139 | 2020 | 22,288 | 2019 | 22,484 | 2018 | 22,759 | 2017 | 23,064 | 2016 | 23,198 | 2015 | 23,163 | 2014 | 23,098 | 2013 | 22,934 | 2012 | 22,642 | 2011 | 22,325 | 2010 | 21,946 | 2009 | 21,387 | 2008 | 20,667 | 2007 | 19,874 | 2006 | 18,999 | 2005 | 18,024 | 2004 | 17,245 | 2003 | 16,760 | 2002 | 16,383 | 2001 | 16,123 | 2000 | 15,951 | 1999 | 15,558 | 1998 | 14,961 | 1997 | 14,450 | 1996 | 14,048 | 1995 | 13,797 | 1994 | 13,713 | 1993 | 13,658 | 1992 | 13,528 | 1991 | 13,338 | 1990 | 13,077 | 1989 | 12,736 | 1988 | 12,351 | 1987 | 11,919 | 1986 | 11,443 | 1985 | 10,938 | 1984 | 10,438 | 1983 | 9,976 | 1982 | 9,554 | 1981 | 9,154 | 1980 | 8,778 | 1979 | 8,435 | 1978 | 8,141 | 1977 | 7,909 | 1976 | 7,727 | 1975 | 7,584 | 1974 | 7,467 | 1973 | 7,350 | 1972 | 7,221 | 1971 | 7,084 | 1970 | 6,929 | 1969 | 6,745 | 1968 | 6,532 | 1967 | 6,296 | 1966 | 6,010 | 1965 | 5,698 | 1964 | 5,410 | 1963 | 5,144 | 1962 | 4,903 | 1961 | 4,683 | 1960 | 4,482 |
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