Year | Value | 2022 | 7,193 | 2021 | 7,111 | 2020 | 6,990 | 2019 | 6,841 | 2018 | 6,686 | 2017 | 6,552 | 2016 | 6,455 | 2015 | 6,395 | 2014 | 6,376 | 2013 | 6,384 | 2012 | 6,402 | 2011 | 6,417 | 2010 | 6,420 | 2009 | 6,420 | 2008 | 6,397 | 2007 | 6,322 | 2006 | 6,222 | 2005 | 6,127 | 2004 | 6,044 | 2003 | 5,975 | 2002 | 5,920 | 2001 | 5,845 | 2000 | 5,712 | 1999 | 5,531 | 1998 | 5,336 | 1997 | 5,126 | 1996 | 4,898 | 1995 | 4,662 | 1994 | 4,416 | 1993 | 4,173 | 1992 | 3,954 | 1991 | 3,759 | 1990 | 3,582 | 1989 | 3,428 | 1988 | 3,295 | 1987 | 3,179 | 1986 | 3,076 | 1985 | 2,985 | 1984 | 2,901 | 1983 | 2,823 | 1982 | 2,749 | 1981 | 2,675 | 1980 | 2,602 | 1979 | 2,529 | 1978 | 2,455 | 1977 | 2,387 | 1976 | 2,330 | 1975 | 2,279 | 1974 | 2,242 | 1973 | 2,220 | 1972 | 2,203 | 1971 | 2,191 | 1970 | 2,191 | 1969 | 2,211 | 1968 | 2,246 | 1967 | 2,286 | 1966 | 2,325 | 1965 | 2,359 | 1964 | 2,389 | 1963 | 2,413 | 1962 | 2,428 | 1961 | 2,440 | 1960 | 2,444 |
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