| Year | Value | | 2022 | 3,563 | | 2021 | 2,956 | | 2020 | 2,974 | | 2019 | 2,994 | | 2018 | 3,013 | | 2017 | 3,027 | | 2016 | 3,001 | | 2015 | 2,942 | | 2014 | 2,828 | | 2013 | 2,700 | | 2012 | 2,558 | | 2011 | 2,441 | | 2010 | 2,397 | | 2009 | 2,218 | | 2008 | 2,097 | | 2007 | 1,925 | | 2006 | 1,776 | | 2005 | 1,622 | | 2004 | 1,526 | | 2003 | 1,450 | | 2002 | 1,397 | | 2001 | 1,308 | | 2000 | 1,274 | | 1999 | 1,242 | | 1998 | 1,219 | | 1997 | 1,222 | | 1996 | 1,230 | | 1995 | 1,220 | | 1994 | 1,221 | | 1993 | 1,214 | | 1992 | 1,212 | | 1991 | 1,235 | | 1990 | 1,253 | | 1989 | 1,273 | | 1988 | 1,282 | | 1987 | 1,289 | | 1986 | 1,238 | | 1985 | 1,224 | | 1984 | 1,205 | | 1983 | 1,186 | | 1982 | 1,173 | | 1981 | 1,154 | | 1980 | 1,132 | | 1979 | 1,111 | | 1978 | 1,098 | | 1977 | 1,101 | | 1976 | 1,088 | | 1975 | 1,070 | | 1974 | 1,052 | | 1973 | 1,040 | | 1972 | 1,028 | | 1971 | 1,010 | | 1970 | 1,000 | | 1969 | 986 | | 1968 | 970 | | 1967 | 957 | | 1966 | 948 | | 1965 | 941 | | 1964 | 936 | | 1963 | 931 | | 1962 | 922 | | 1961 | 907 | | 1960 | 888 |
|