Year | Value | 2022 | 47,814 | 2021 | 45,206 | 2020 | 42,867 | 2019 | 40,239 | 2018 | 37,891 | 2017 | 36,384 | 2016 | 35,209 | 2015 | 34,314 | 2014 | 34,169 | 2013 | 34,129 | 2012 | 33,519 | 2011 | 32,558 | 2010 | 31,333 | 2009 | 29,945 | 2008 | 28,476 | 2007 | 27,038 | 2006 | 25,799 | 2005 | 24,909 | 2004 | 24,434 | 2003 | 24,465 | 2002 | 24,896 | 2001 | 25,390 | 2000 | 25,710 | 1999 | 25,820 | 1998 | 25,659 | 1997 | 25,309 | 1996 | 25,122 | 1995 | 25,307 | 1994 | 25,804 | 1993 | 26,564 | 1992 | 27,522 | 1991 | 28,410 | 1990 | 29,099 | 1989 | 29,662 | 1988 | 30,144 | 1987 | 30,534 | 1986 | 30,866 | 1985 | 31,200 | 1984 | 31,543 | 1983 | 31,881 | 1982 | 32,126 | 1981 | 32,126 | 1980 | 31,759 | 1979 | 30,996 | 1978 | 29,832 | 1977 | 28,418 | 1976 | 27,142 | 1975 | 26,277 | 1974 | 25,827 | 1973 | 25,802 | 1972 | 26,037 | 1971 | 26,042 | 1970 | 25,549 | 1969 | 24,612 | 1968 | 23,208 | 1967 | 21,468 | 1966 | 19,849 | 1965 | 18,672 | 1964 | 17,910 | 1963 | 17,528 | 1962 | 17,449 | 1961 | 17,328 | 1960 | 16,917 |
|