Year	Percent
1995	9.62
1996	11.07
1997	10.42
1998	9.287
1999	9.819
2000	6.399
2001	8.483
2002	9.728
2003	6.739
2004	5.576
2005	5.626
2006	5.07
2007	5.447
2008	4.627
2009	7.746
2010	7.324