Year | Value | 2022 | 15,087 | 2021 | 16,076 | 2020 | 16,758 | 2019 | 17,009 | 2018 | 16,642 | 2017 | 16,167 | 2016 | 15,700 | 2015 | 15,334 | 2014 | 15,140 | 2013 | 15,070 | 2012 | 14,930 | 2011 | 14,719 | 2010 | 14,322 | 2009 | 13,575 | 2008 | 12,516 | 2007 | 11,277 | 2006 | 10,127 | 2005 | 9,201 | 2004 | 8,439 | 2003 | 7,873 | 2002 | 7,558 | 2001 | 7,415 | 2000 | 7,374 | 1999 | 7,450 | 1998 | 7,677 | 1997 | 8,097 | 1996 | 8,668 | 1995 | 9,218 | 1994 | 9,646 | 1993 | 9,902 | 1992 | 9,970 | 1991 | 9,899 | 1990 | 9,649 | 1989 | 9,226 | 1988 | 8,876 | 1987 | 8,705 | 1986 | 8,520 | 1985 | 8,284 | 1984 | 8,065 | 1983 | 7,927 | 1982 | 7,827 | 1981 | 7,747 | 1980 | 7,717 | 1979 | 7,711 | 1978 | 7,727 | 1977 | 7,782 | 1976 | 7,853 | 1975 | 7,939 | 1974 | 8,058 | 1973 | 8,226 | 1972 | 8,437 | 1971 | 8,613 | 1970 | 8,729 | 1969 | 8,753 | 1968 | 8,620 | 1967 | 8,373 | 1966 | 8,103 | 1965 | 7,858 | 1964 | 7,654 | 1963 | 7,466 | 1962 | 7,315 | 1961 | 7,167 | 1960 | 6,974 |
|