Year	Percent
1995	4.582
1996	4.51
1997	5.786
1998	6.5
1999	5.735
2000	6.478
2001	8.334
2002	8.906
2003	9.451
2004	12.16
2005	12.71
2006	14.96
2007	11.33
2008	12.45
2009	11.05
2010	8.964