Year | Value | 2022 | 34,036 | 2021 | 33,004 | 2020 | 31,884 | 2019 | 30,524 | 2018 | 29,069 | 2017 | 27,541 | 2016 | 26,048 | 2015 | 24,740 | 2014 | 23,602 | 2013 | 22,400 | 2012 | 21,152 | 2011 | 20,033 | 2010 | 18,945 | 2009 | 17,905 | 2008 | 17,213 | 2007 | 16,863 | 2006 | 16,606 | 2005 | 16,437 | 2004 | 16,354 | 2003 | 16,347 | 2002 | 16,380 | 2001 | 16,400 | 2000 | 16,365 | 1999 | 16,265 | 1998 | 16,122 | 1997 | 15,930 | 1996 | 15,681 | 1995 | 15,372 | 1994 | 14,984 | 1993 | 14,489 | 1992 | 13,942 | 1991 | 13,430 | 1990 | 13,008 | 1989 | 12,686 | 1988 | 12,469 | 1987 | 12,306 | 1986 | 12,070 | 1985 | 11,690 | 1984 | 11,204 | 1983 | 10,631 | 1982 | 9,969 | 1981 | 9,324 | 1980 | 8,731 | 1979 | 8,141 | 1978 | 7,567 | 1977 | 7,051 | 1976 | 6,614 | 1975 | 6,262 | 1974 | 6,001 | 1973 | 5,833 | 1972 | 5,777 | 1971 | 5,867 | 1970 | 6,030 | 1969 | 6,199 | 1968 | 6,398 | 1967 | 6,593 | 1966 | 6,708 | 1965 | 6,702 | 1964 | 6,604 | 1963 | 6,401 | 1962 | 6,120 | 1961 | 5,891 | 1960 | 5,786 |
|