Year | Value | 2022 | 49,987 | 2021 | 48,951 | 2020 | 48,760 | 2019 | 48,938 | 2018 | 49,171 | 2017 | 49,506 | 2016 | 49,733 | 2015 | 49,449 | 2014 | 49,551 | 2013 | 50,422 | 2012 | 51,231 | 2011 | 52,164 | 2010 | 53,661 | 2009 | 55,742 | 2008 | 58,200 | 2007 | 61,303 | 2006 | 63,453 | 2005 | 65,000 | 2004 | 66,156 | 2003 | 66,843 | 2002 | 67,473 | 2001 | 68,981 | 2000 | 71,222 | 1999 | 73,320 | 1998 | 75,253 | 1997 | 76,836 | 1996 | 77,621 | 1995 | 77,628 | 1994 | 77,045 | 1993 | 76,313 | 1992 | 75,658 | 1991 | 74,961 | 1990 | 74,093 | 1989 | 73,349 | 1988 | 72,988 | 1987 | 72,922 | 1986 | 72,828 | 1985 | 73,164 | 1984 | 73,747 | 1983 | 73,848 | 1982 | 73,562 | 1981 | 73,138 | 1980 | 72,680 | 1979 | 72,356 | 1978 | 72,322 | 1977 | 72,404 | 1976 | 72,853 | 1975 | 73,556 | 1974 | 74,690 | 1973 | 76,235 | 1972 | 77,626 | 1971 | 78,697 | 1970 | 79,882 | 1969 | 80,764 | 1968 | 80,234 | 1967 | 78,424 | 1966 | 75,512 | 1965 | 70,366 | 1964 | 65,354 | 1963 | 63,198 | 1962 | 62,564 | 1961 | 62,846 | 1960 | 64,757 |
|