Year | Value | 2022 | 32,585 | 2021 | 30,961 | 2020 | 29,528 | 2019 | 28,334 | 2018 | 27,428 | 2017 | 26,803 | 2016 | 26,380 | 2015 | 26,085 | 2014 | 25,851 | 2013 | 25,622 | 2012 | 25,371 | 2011 | 25,087 | 2010 | 24,740 | 2009 | 24,304 | 2008 | 23,764 | 2007 | 23,113 | 2006 | 22,357 | 2005 | 21,505 | 2004 | 20,556 | 2003 | 19,519 | 2002 | 18,429 | 2001 | 17,333 | 2000 | 16,289 | 1999 | 15,360 | 1998 | 14,570 | 1997 | 13,919 | 1996 | 13,403 | 1995 | 12,994 | 1994 | 12,642 | 1993 | 12,331 | 1992 | 12,086 | 1991 | 11,951 | 1990 | 11,968 | 1989 | 12,055 | 1988 | 12,110 | 1987 | 12,132 | 1986 | 12,119 | 1985 | 12,070 | 1984 | 11,990 | 1983 | 11,877 | 1982 | 11,727 | 1981 | 11,538 | 1980 | 11,304 | 1979 | 11,195 | 1978 | 11,235 | 1977 | 11,303 | 1976 | 11,413 | 1975 | 11,548 | 1974 | 11,691 | 1973 | 11,591 | 1972 | 11,260 | 1971 | 11,023 | 1970 | 10,818 | 1969 | 10,642 | 1968 | 10,486 | 1967 | 10,285 | 1966 | 10,156 | 1965 | 10,120 | 1964 | 10,131 | 1963 | 10,059 | 1962 | 9,865 | 1961 | 9,632 | 1960 | 9,479 |
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