Year	Percent
1995	5.779
1996	5.491
1997	5.543
1998	5.412
1999	5.866
2000	6.277
2001	6.024
2002	8.009
2003	5.78
2004	5.1
2005	4.73
2006	4.028
2007	4.196
2008	3.572
2009	4.55
2010	4.534