Year | Value | 2022 | 15,419 | 2021 | 15,351 | 2020 | 15,348 | 2019 | 15,461 | 2018 | 15,703 | 2017 | 15,955 | 2016 | 16,021 | 2015 | 15,843 | 2014 | 15,606 | 2013 | 15,374 | 2012 | 15,131 | 2011 | 14,983 | 2010 | 14,925 | 2009 | 14,785 | 2008 | 14,546 | 2007 | 14,269 | 2006 | 14,004 | 2005 | 13,648 | 2004 | 13,153 | 2003 | 12,612 | 2002 | 12,031 | 2001 | 11,460 | 2000 | 11,214 | 1999 | 11,256 | 1998 | 11,287 | 1997 | 11,305 | 1996 | 11,303 | 1995 | 11,264 | 1994 | 11,188 | 1993 | 11,081 | 1992 | 10,942 | 1991 | 10,770 | 1990 | 10,527 | 1989 | 10,241 | 1988 | 9,976 | 1987 | 9,739 | 1986 | 9,550 | 1985 | 9,408 | 1984 | 9,291 | 1983 | 9,165 | 1982 | 8,992 | 1981 | 8,760 | 1980 | 8,482 | 1979 | 8,189 | 1978 | 7,907 | 1977 | 7,652 | 1976 | 7,428 | 1975 | 7,220 | 1974 | 7,187 | 1973 | 7,314 | 1972 | 7,418 | 1971 | 7,507 | 1970 | 7,611 | 1969 | 7,525 | 1968 | 7,254 | 1967 | 7,037 | 1966 | 6,880 | 1965 | 6,723 | 1964 | 6,551 | 1963 | 6,383 | 1962 | 6,186 | 1961 | 5,925 | 1960 | 5,738 |
|