Year	Percent
1988	99
1989	99
1990	99
1991	98
1992	98
1993	99
1994	99
1995	99
1996	99
1997	99
1998	99
1999	99
2000	99
2001	99
2002	99
2003	99
2004	99
2005	99
2006	99
2007	99
2008	99
2009	99
2010	99
2011	99