| Year | Value | | 2022 | 3,312 | | 2021 | 3,136 | | 2020 | 2,975 | | 2019 | 2,819 | | 2018 | 2,702 | | 2017 | 2,637 | | 2016 | 2,593 | | 2015 | 2,584 | | 2014 | 2,617 | | 2013 | 2,685 | | 2012 | 2,773 | | 2011 | 2,866 | | 2010 | 2,942 | | 2009 | 2,978 | | 2008 | 2,958 | | 2007 | 2,890 | | 2006 | 2,792 | | 2005 | 2,680 | | 2004 | 2,564 | | 2003 | 2,447 | | 2002 | 2,338 | | 2001 | 2,237 | | 2000 | 2,137 | | 1999 | 2,043 | | 1998 | 1,962 | | 1997 | 1,895 | | 1996 | 1,845 | | 1995 | 1,810 | | 1994 | 1,780 | | 1993 | 1,747 | | 1992 | 1,708 | | 1991 | 1,661 | | 1990 | 1,614 | | 1989 | 1,564 | | 1988 | 1,516 | | 1987 | 1,481 | | 1986 | 1,454 | | 1985 | 1,426 | | 1984 | 1,392 | | 1983 | 1,352 | | 1982 | 1,299 | | 1981 | 1,239 | | 1980 | 1,184 | | 1979 | 1,133 | | 1978 | 1,136 | | 1977 | 1,202 | | 1976 | 1,271 | | 1975 | 1,326 | | 1974 | 1,366 | | 1973 | 1,377 | | 1972 | 1,358 | | 1971 | 1,322 | | 1970 | 1,282 | | 1969 | 1,241 | | 1968 | 1,223 | | 1967 | 1,225 | | 1966 | 1,222 | | 1965 | 1,199 | | 1964 | 1,159 | | 1963 | 1,120 | | 1962 | 1,087 | | 1961 | 1,058 | | 1960 | 1,034 |
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