Year | Value | 2022 | 51,092 | 2021 | 49,296 | 2020 | 48,073 | 2019 | 46,673 | 2018 | 45,662 | 2017 | 46,256 | 2016 | 48,072 | 2015 | 49,767 | 2014 | 51,186 | 2013 | 52,556 | 2012 | 53,202 | 2011 | 53,443 | 2010 | 54,173 | 2009 | 54,708 | 2008 | 54,549 | 2007 | 54,530 | 2006 | 54,402 | 2005 | 54,503 | 2004 | 55,041 | 2003 | 55,293 | 2002 | 55,030 | 2001 | 54,013 | 2000 | 52,013 | 1999 | 49,488 | 1998 | 46,699 | 1997 | 43,736 | 1996 | 41,527 | 1995 | 39,984 | 1994 | 38,343 | 1993 | 36,102 | 1992 | 33,270 | 1991 | 30,673 | 1990 | 28,688 | 1989 | 27,726 | 1988 | 28,136 | 1987 | 29,506 | 1986 | 30,987 | 1985 | 32,348 | 1984 | 33,857 | 1983 | 36,551 | 1982 | 40,389 | 1981 | 44,069 | 1980 | 47,188 | 1979 | 49,271 | 1978 | 48,816 | 1977 | 46,152 | 1976 | 43,304 | 1975 | 40,964 | 1974 | 39,099 | 1973 | 37,408 | 1972 | 35,801 | 1971 | 34,356 | 1970 | 33,227 | 1969 | 32,531 | 1968 | 32,175 | 1967 | 31,779 | 1966 | 31,178 | 1965 | 30,203 | 1964 | 28,847 | 1963 | 27,069 | 1962 | 25,025 | 1961 | 22,970 | 1960 | 20,967 |
|