Year | Value | 2022 | 22,406 | 2021 | 21,819 | 2020 | 21,307 | 2019 | 20,783 | 2018 | 20,230 | 2017 | 19,707 | 2016 | 19,253 | 2015 | 18,874 | 2014 | 18,568 | 2013 | 18,332 | 2012 | 18,220 | 2011 | 18,106 | 2010 | 17,791 | 2009 | 17,329 | 2008 | 16,730 | 2007 | 16,152 | 2006 | 15,709 | 2005 | 15,288 | 2004 | 14,875 | 2003 | 14,464 | 2002 | 14,059 | 2001 | 13,664 | 2000 | 13,272 | 1999 | 12,879 | 1998 | 12,496 | 1997 | 12,129 | 1996 | 11,800 | 1995 | 11,497 | 1994 | 11,168 | 1993 | 10,820 | 1992 | 10,449 | 1991 | 10,096 | 1990 | 9,790 | 1989 | 9,507 | 1988 | 9,231 | 1987 | 8,945 | 1986 | 8,662 | 1985 | 8,384 | 1984 | 8,108 | 1983 | 7,836 | 1982 | 7,564 | 1981 | 7,298 | 1980 | 7,038 | 1979 | 6,782 | 1978 | 6,533 | 1977 | 6,287 | 1976 | 6,047 | 1975 | 5,817 | 1974 | 5,596 | 1973 | 5,384 | 1972 | 5,180 | 1971 | 4,975 | 1970 | 4,765 | 1969 | 4,550 | 1968 | 4,332 | 1967 | 4,112 | 1966 | 3,894 | 1965 | 3,682 | 1964 | 3,478 | 1963 | 3,279 | 1962 | 3,088 | 1961 | 2,902 | 1960 | 2,723 |
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