1970	1980	1990	2000	2010
1971	1981	1991	2001
1972	1982	1992	2002
1973	1983	1993	2003
1974	1984	1994	2004
1975	1985	1995	2005
1976	1986	1996	2006
1977	1987	1997	2007
1978	1988	1998	2008
1979	1989	1999	2009