Schedule Percentage increase of earnings factor for specified tax years

Tax year	Percentage increase
1978 – 1979	705.0
1979 – 1980	610.5
1980 – 1981	493.6
1981 – 1982	397.1
1982 – 1983	351.5
1983 – 1984	319.2
1984 – 1985	288.2
1985 – 1986	264.2
1986 – 1987	234.4
1987 – 1988	211.3
1988 – 1989	186.4
1989 – 1990	158.5
1990 – 1991	140.9
1991 – 1992	118.8
1992 – 1993	105.5
1993 – 1994	95.7
1994 – 1995	89.8
1995 – 1996	81.8
1996 – 1997	76.8
1997 – 1998	68.4
1998 – 1999	61.0
1999 – 2000	54.5
2000 – 2001	45.4
2001 – 2002	39.8
2002 – 2003	34.0
2003 – 2004	29.4
2004 – 2005	24.6
2005 – 2006	19.7
2006 – 2007	15.8
2007 – 2008	11.2
2008 – 2009	6.7
2009 – 2010	3.5
2010 – 2011	2.3