Year	Percent
1982	0.01065
1990	0.2
1991	0.3
1992	0.4
1993	0.5
1994	0.6
1995	0.8
1996	0.9
1997	1
1998	1.1
1999	1.1
2000	1.2
2001	1.2
2002	1.2
2003	1.3
2004	1.3
2005	1.3
2006	1.4
2007	1.4
2008	1.5
2009	1.5
2010	1.5
2011	1.5