Year | Value | 2022 | 39,327 | 2021 | 39,039 | 2020 | 38,756 | 2019 | 38,482 | 2018 | 38,181 | 2017 | 37,889 | 2016 | 37,609 | 2015 | 37,355 | 2014 | 37,096 | 2013 | 36,806 | 2012 | 36,505 | 2011 | 36,189 | 2010 | 35,926 | 2009 | 35,675 | 2008 | 35,401 | 2007 | 35,150 | 2006 | 34,889 | 2005 | 34,603 | 2004 | 34,300 | 2003 | 34,000 | 2002 | 33,693 | 2001 | 33,376 | 2000 | 33,026 | 1999 | 32,615 | 1998 | 32,190 | 1997 | 31,770 | 1996 | 31,337 | 1995 | 30,890 | 1994 | 30,447 | 1993 | 30,012 | 1992 | 29,581 | 1991 | 29,168 | 1990 | 28,765 | 1989 | 28,357 | 1988 | 27,944 | 1987 | 27,542 | 1986 | 27,159 | 1985 | 26,785 | 1984 | 26,420 | 1983 | 26,055 | 1982 | 25,689 | 1981 | 25,346 | 1980 | 25,003 | 1979 | 24,616 | 1978 | 24,205 | 1977 | 23,803 | 1976 | 23,416 | 1975 | 23,030 | 1974 | 22,638 | 1973 | 22,251 | 1972 | 21,873 | 1971 | 21,517 | 1970 | 21,089 | 1969 | 20,558 | 1968 | 20,011 | 1967 | 19,467 | 1966 | 18,957 | 1965 | 18,500 | 1964 | 18,058 | 1963 | 17,625 | 1962 | 17,221 | 1961 | 16,834 | 1960 | 16,472 |
|