Year	Number
1978	7
1979	7
1980	7
1981	7
1982	7
1983	7
1984	7
1985	7
1986	7
1987	7
1988	7
1989	7
1990	8
1991	8
1992	8
1993	8
1994	8
1995	8
1996	8
1997	8
1998	8
1999	8
2000	0
2001	0
2002	0
2003	4
2004	8
2005	8
2006	8
2007	8
2008	8
2009	8
2010	8
2011	8