Year | Value | 2022 | 45,552 | 2021 | 46,074 | 2020 | 46,722 | 2019 | 47,458 | 2018 | 48,236 | 2017 | 48,900 | 2016 | 49,392 | 2015 | 49,805 | 2014 | 50,279 | 2013 | 50,850 | 2012 | 51,487 | 2011 | 52,083 | 2010 | 52,399 | 2009 | 52,413 | 2008 | 52,246 | 2007 | 52,004 | 2006 | 51,710 | 2005 | 51,401 | 2004 | 51,125 | 2003 | 50,826 | 2002 | 50,630 | 2001 | 50,654 | 2000 | 50,851 | 1999 | 51,104 | 1998 | 51,411 | 1997 | 51,803 | 1996 | 52,282 | 1995 | 52,998 | 1994 | 53,896 | 1993 | 54,739 | 1992 | 55,463 | 1991 | 56,075 | 1990 | 56,493 | 1989 | 56,798 | 1988 | 57,061 | 1987 | 57,136 | 1986 | 57,003 | 1985 | 56,527 | 1984 | 55,656 | 1983 | 54,552 | 1982 | 53,250 | 1981 | 51,747 | 1980 | 50,038 | 1979 | 48,105 | 1978 | 46,139 | 1977 | 44,457 | 1976 | 43,321 | 1975 | 42,784 | 1974 | 42,756 | 1973 | 43,015 | 1972 | 43,270 | 1971 | 43,472 | 1970 | 43,657 | 1969 | 43,834 | 1968 | 44,031 | 1967 | 44,226 | 1966 | 44,173 | 1965 | 43,853 | 1964 | 43,435 | 1963 | 42,888 | 1962 | 42,178 | 1961 | 41,429 | 1960 | 40,595 |
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