Year12	SASIE_12
1979	7.2
1980	7.85
1981	7.25
1982	7.45
1983	7.52
1984	7.17
1985	6.93
1986	7.54
1987	7.48
1988	7.49
1989	7.04
1990	6.24
1991	6.55
1992	7.55
1993	6.5
1994	7.18
1995	6.13
1996	7.88
1997	6.74
1998	6.56
1999	6.24
2000	6.32
2001	6.75
2002	5.96
2003	6.15
2004	6.05
2005	5.57
2006	5.92
2007	4.3
2008	4.68
2009	5.36
2010	4.9
2011	4.61
2012	3.61