Year	Percent
1995	5.235
1996	4.669
1997	5.122
1998	5.363
1999	5.974
2000	6.184
2001	7.374
2002	7.583
2003	7.581
2004	7.313
2005	7.307
2006	6.894
2007	6.814
2008	6.975
2009	7.227
2010	6.867