Year | Value | 2022 | 3,374 | 2021 | 3,383 | 2020 | 3,412 | 2019 | 3,466 | 2018 | 3,588 | 2017 | 3,689 | 2016 | 3,692 | 2015 | 3,651 | 2014 | 3,622 | 2013 | 3,563 | 2012 | 3,495 | 2011 | 3,447 | 2010 | 3,397 | 2009 | 3,352 | 2008 | 3,327 | 2007 | 3,320 | 2006 | 3,356 | 2005 | 3,437 | 2004 | 3,516 | 2003 | 3,569 | 2002 | 3,583 | 2001 | 3,534 | 2000 | 3,424 | 1999 | 3,281 | 1998 | 3,124 | 1997 | 2,977 | 1996 | 2,912 | 1995 | 2,913 | 1994 | 2,895 | 1993 | 2,863 | 1992 | 2,820 | 1991 | 2,772 | 1990 | 2,734 | 1989 | 2,706 | 1988 | 2,691 | 1987 | 2,674 | 1986 | 2,667 | 1985 | 2,663 | 1984 | 2,644 | 1983 | 2,624 | 1982 | 2,612 | 1981 | 2,606 | 1980 | 2,601 | 1979 | 2,593 | 1978 | 2,580 | 1977 | 2,575 | 1976 | 2,572 | 1975 | 2,547 | 1974 | 2,501 | 1973 | 2,469 | 1972 | 2,454 | 1971 | 2,439 | 1970 | 2,429 | 1969 | 2,417 | 1968 | 2,401 | 1967 | 2,380 | 1966 | 2,350 | 1965 | 2,313 | 1964 | 2,272 | 1963 | 2,227 | 1962 | 2,179 | 1961 | 2,127 | 1960 | 2,070 |
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