Year	Percent
1995	4.515
1996	3.652
1997	4.198
1998	4.293
1999	4.667
2000	5.261
2001	5.082
2002	4.391
2003	4.141
2004	3.764
2005	3.001
2006	3.05
2007	3.157
2008	4.275
2009	2.765
2010	2.656