Year	Percent
1995	11.74
1996	9.263
1997	9.243
1998	9.521
1999	11.77
2000	13.23
2001	15.08
2002	9.706
2003	10.35
2004	8.548
2005	8.957
2006	9.898
2007	10.18
2008	8.837
2009	9.451
2010	8.207