Year | Value | 2022 | 3,911 | 2021 | 3,827 | 2020 | 3,844 | 2019 | 3,936 | 2018 | 4,070 | 2017 | 4,224 | 2016 | 4,317 | 2015 | 4,257 | 2014 | 4,121 | 2013 | 3,963 | 2012 | 3,708 | 2011 | 3,382 | 2010 | 3,197 | 2009 | 3,170 | 2008 | 3,171 | 2007 | 3,209 | 2006 | 3,273 | 2005 | 3,306 | 2004 | 3,267 | 2003 | 3,178 | 2002 | 3,075 | 2001 | 2,983 | 2000 | 2,917 | 1999 | 2,861 | 1998 | 2,794 | 1997 | 2,744 | 1996 | 2,733 | 1995 | 2,736 | 1994 | 2,750 | 1993 | 2,782 | 1992 | 2,804 | 1991 | 2,782 | 1990 | 2,731 | 1989 | 2,680 | 1988 | 2,630 | 1987 | 2,574 | 1986 | 2,525 | 1985 | 2,496 | 1984 | 2,498 | 1983 | 2,559 | 1982 | 2,667 | 1981 | 2,772 | 1980 | 2,861 | 1979 | 2,931 | 1978 | 2,961 | 1977 | 2,943 | 1976 | 2,891 | 1975 | 2,840 | 1974 | 2,804 | 1973 | 2,778 | 1972 | 2,750 | 1971 | 2,714 | 1970 | 2,655 | 1969 | 2,583 | 1968 | 2,506 | 1967 | 2,429 | 1966 | 2,371 | 1965 | 2,310 | 1964 | 2,230 | 1963 | 2,170 | 1962 | 2,149 | 1961 | 2,141 | 1960 | 2,126 |
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