Year	Percent
1980	0.01193
1990	0.1
1991	0.2
1992	0.2
1993	0.4
1994	0.6
1995	0.7
1996	0.9
1997	0.9
1998	1
1999	1
2000	1
2001	1
2002	1
2003	1
2004	1
2005	1.1
2006	1
2007	1
2008	1
2009	1.2
2010	1.1
2011	1