| Year | Value | | 2022 | 4,113 | | 2021 | 3,385 | | 2020 | 3,287 | | 2019 | 3,175 | | 2018 | 3,101 | | 2017 | 3,051 | | 2016 | 3,035 | | 2015 | 3,048 | | 2014 | 3,030 | | 2013 | 3,032 | | 2012 | 3,026 | | 2011 | 3,015 | | 2010 | 3,081 | | 2009 | 2,951 | | 2008 | 2,857 | | 2007 | 2,697 | | 2006 | 2,584 | | 2005 | 2,421 | | 2004 | 2,291 | | 2003 | 2,180 | | 2002 | 2,068 | | 2001 | 1,859 | | 2000 | 1,733 | | 1999 | 1,627 | | 1998 | 1,516 | | 1997 | 1,432 | | 1996 | 1,379 | | 1995 | 1,320 | | 1994 | 1,279 | | 1993 | 1,238 | | 1992 | 1,211 | | 1991 | 1,208 | | 1990 | 1,198 | | 1989 | 1,207 | | 1988 | 1,225 | | 1987 | 1,251 | | 1986 | 1,233 | | 1985 | 1,260 | | 1984 | 1,278 | | 1983 | 1,286 | | 1982 | 1,298 | | 1981 | 1,296 | | 1980 | 1,278 | | 1979 | 1,260 | | 1978 | 1,245 | | 1977 | 1,235 | | 1976 | 1,211 | | 1975 | 1,191 | | 1974 | 1,167 | | 1973 | 1,151 | | 1972 | 1,140 | | 1971 | 1,116 | | 1970 | 1,102 | | 1969 | 1,094 | | 1968 | 1,086 | | 1967 | 1,072 | | 1966 | 1,057 | | 1965 | 1,042 | | 1964 | 1,025 | | 1963 | 1,007 | | 1962 | 992 | | 1961 | 978 | | 1960 | 965 |
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