| Year | Value | | 2022 | 3,343 | | 2021 | 3,388 | | 2020 | 3,394 | | 2019 | 3,360 | | 2018 | 3,299 | | 2017 | 3,220 | | 2016 | 3,126 | | 2015 | 3,016 | | 2014 | 2,888 | | 2013 | 2,743 | | 2012 | 2,588 | | 2011 | 2,438 | | 2010 | 2,305 | | 2009 | 2,191 | | 2008 | 2,098 | | 2007 | 2,021 | | 2006 | 1,947 | | 2005 | 1,870 | | 2004 | 1,791 | | 2003 | 1,712 | | 2002 | 1,637 | | 2001 | 1,573 | | 2000 | 1,524 | | 1999 | 1,490 | | 1998 | 1,464 | | 1997 | 1,447 | | 1996 | 1,435 | | 1995 | 1,418 | | 1994 | 1,400 | | 1993 | 1,382 | | 1992 | 1,366 | | 1991 | 1,350 | | 1990 | 1,344 | | 1989 | 1,355 | | 1988 | 1,370 | | 1987 | 1,383 | | 1986 | 1,393 | | 1985 | 1,403 | | 1984 | 1,409 | | 1983 | 1,413 | | 1982 | 1,421 | | 1981 | 1,432 | | 1980 | 1,430 | | 1979 | 1,413 | | 1978 | 1,394 | | 1977 | 1,374 | | 1976 | 1,353 | | 1975 | 1,332 | | 1974 | 1,312 | | 1973 | 1,293 | | 1972 | 1,276 | | 1971 | 1,256 | | 1970 | 1,233 | | 1969 | 1,209 | | 1968 | 1,181 | | 1967 | 1,152 | | 1966 | 1,119 | | 1965 | 1,085 | | 1964 | 1,045 | | 1963 | 1,000 | | 1962 | 954 | | 1961 | 908 | | 1960 | 863 |
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