Year	Percent
1995	5.682
1996	5.832
1997	5.315
1998	5.749
1999	5.613
2000	6.331
2001	6.783
2002	6.986
2003	7.243
2004	9.927
2005	12.23
2006	14.25
2007	13.88
2008	12.45
2009	11.45
2010	11.59