| Year | Value | | 2022 | 3,045 | | 2021 | 3,066 | | 2020 | 3,046 | | 2019 | 2,993 | | 2018 | 2,920 | | 2017 | 2,834 | | 2016 | 2,745 | | 2015 | 2,659 | | 2014 | 2,568 | | 2013 | 2,464 | | 2012 | 2,353 | | 2011 | 2,241 | | 2010 | 2,128 | | 2009 | 2,017 | | 2008 | 1,911 | | 2007 | 1,821 | | 2006 | 1,746 | | 2005 | 1,679 | | 2004 | 1,621 | | 2003 | 1,575 | | 2002 | 1,530 | | 2001 | 1,481 | | 2000 | 1,449 | | 1999 | 1,437 | | 1998 | 1,435 | | 1997 | 1,443 | | 1996 | 1,455 | | 1995 | 1,461 | | 1994 | 1,460 | | 1993 | 1,460 | | 1992 | 1,461 | | 1991 | 1,466 | | 1990 | 1,470 | | 1989 | 1,470 | | 1988 | 1,468 | | 1987 | 1,467 | | 1986 | 1,467 | | 1985 | 1,466 | | 1984 | 1,465 | | 1983 | 1,465 | | 1982 | 1,464 | | 1981 | 1,463 | | 1980 | 1,468 | | 1979 | 1,477 | | 1978 | 1,482 | | 1977 | 1,481 | | 1976 | 1,478 | | 1975 | 1,473 | | 1974 | 1,467 | | 1973 | 1,459 | | 1972 | 1,449 | | 1971 | 1,437 | | 1970 | 1,421 | | 1969 | 1,405 | | 1968 | 1,386 | | 1967 | 1,367 | | 1966 | 1,346 | | 1965 | 1,326 | | 1964 | 1,309 | | 1963 | 1,291 | | 1962 | 1,276 | | 1961 | 1,261 | | 1960 | 1,244 |
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