Year | Value | 2022 | 50,915 | 2021 | 51,711 | 2020 | 52,415 | 2019 | 53,049 | 2018 | 53,508 | 2017 | 54,179 | 2016 | 55,168 | 2015 | 56,131 | 2014 | 56,899 | 2013 | 57,344 | 2012 | 57,051 | 2011 | 55,841 | 2010 | 54,156 | 2009 | 52,104 | 2008 | 49,830 | 2007 | 48,322 | 2006 | 47,171 | 2005 | 46,582 | 2004 | 46,305 | 2003 | 46,227 | 2002 | 46,508 | 2001 | 47,048 | 2000 | 47,635 | 1999 | 48,253 | 1998 | 49,171 | 1997 | 50,365 | 1996 | 51,663 | 1995 | 53,077 | 1994 | 54,752 | 1993 | 56,915 | 1992 | 59,385 | 1991 | 61,591 | 1990 | 63,406 | 1989 | 65,092 | 1988 | 66,673 | 1987 | 68,248 | 1986 | 69,635 | 1985 | 71,244 | 1984 | 73,375 | 1983 | 75,248 | 1982 | 76,556 | 1981 | 77,654 | 1980 | 78,031 | 1979 | 77,205 | 1978 | 76,042 | 1977 | 74,913 | 1976 | 73,651 | 1975 | 72,081 | 1974 | 70,992 | 1973 | 70,584 | 1972 | 70,521 | 1971 | 71,187 | 1970 | 72,042 | 1969 | 72,486 | 1968 | 72,587 | 1967 | 72,208 | 1966 | 71,318 | 1965 | 70,197 | 1964 | 69,516 | 1963 | 69,321 | 1962 | 69,631 | 1961 | 70,851 | 1960 | 72,735 |
|