Year	Percent
1995	4.826
1996	5.456
1997	6.174
1998	6.939
1999	6.387
2000	6.146
2001	5.589
2002	6.062
2003	5.102
2004	4.667
2005	6.38
2006	7.233
2007	6.705
2008	9.396
2009	9.076
2010	8.625