| Year | Value | | 2022 | 8,763 | | 2021 | 8,493 | | 2020 | 8,239 | | 2019 | 7,973 | | 2018 | 7,650 | | 2017 | 7,271 | | 2016 | 6,809 | | 2015 | 6,249 | | 2014 | 5,615 | | 2013 | 4,987 | | 2012 | 4,421 | | 2011 | 3,942 | | 2010 | 3,582 | | 2009 | 3,334 | | 2008 | 3,175 | | 2007 | 3,071 | | 2006 | 2,989 | | 2005 | 2,924 | | 2004 | 2,885 | | 2003 | 2,875 | | 2002 | 2,890 | | 2001 | 2,937 | | 2000 | 3,007 | | 1999 | 3,058 | | 1998 | 3,062 | | 1997 | 3,021 | | 1996 | 2,942 | | 1995 | 2,850 | | 1994 | 2,774 | | 1993 | 2,699 | | 1992 | 2,607 | | 1991 | 2,509 | | 1990 | 2,411 | | 1989 | 2,319 | | 1988 | 2,232 | | 1987 | 2,144 | | 1986 | 2,060 | | 1985 | 1,989 | | 1984 | 1,926 | | 1983 | 1,861 | | 1982 | 1,788 | | 1981 | 1,714 | | 1980 | 1,641 | | 1979 | 1,571 | | 1978 | 1,505 | | 1977 | 1,439 | | 1976 | 1,371 | | 1975 | 1,305 | | 1974 | 1,243 | | 1973 | 1,188 | | 1972 | 1,138 | | 1971 | 1,092 | | 1970 | 1,050 | | 1969 | 1,011 | | 1968 | 971 | | 1967 | 939 | | 1966 | 923 | | 1965 | 914 | | 1964 | 884 | | 1963 | 834 | | 1962 | 785 | | 1961 | 744 | | 1960 | 713 |
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