Year | Value | 2022 | 9,923 | 2021 | 10,130 | 2020 | 10,319 | 2019 | 10,500 | 2018 | 10,684 | 2017 | 10,871 | 2016 | 11,032 | 2015 | 11,153 | 2014 | 11,209 | 2013 | 11,093 | 2012 | 10,927 | 2011 | 10,754 | 2010 | 10,604 | 2009 | 10,553 | 2008 | 10,582 | 2007 | 10,609 | 2006 | 10,654 | 2005 | 10,688 | 2004 | 10,755 | 2003 | 10,880 | 2002 | 10,987 | 2001 | 11,050 | 2000 | 11,068 | 1999 | 11,077 | 1998 | 11,109 | 1997 | 11,141 | 1996 | 11,179 | 1995 | 11,209 | 1994 | 11,113 | 1993 | 10,914 | 1992 | 10,710 | 1991 | 10,469 | 1990 | 10,183 | 1989 | 9,889 | 1988 | 9,652 | 1987 | 9,481 | 1986 | 9,369 | 1985 | 9,344 | 1984 | 9,378 | 1983 | 9,394 | 1982 | 9,386 | 1981 | 9,381 | 1980 | 9,424 | 1979 | 9,564 | 1978 | 9,764 | 1977 | 9,937 | 1976 | 10,071 | 1975 | 10,200 | 1974 | 10,229 | 1973 | 10,079 | 1972 | 9,829 | 1971 | 9,354 | 1970 | 8,671 | 1969 | 8,023 | 1968 | 7,690 | 1967 | 7,479 | 1966 | 7,275 | 1965 | 7,070 | 1964 | 6,904 | 1963 | 6,727 | 1962 | 6,537 | 1961 | 6,335 | 1960 | 6,123 |
|