Year	Percent
1995	7.418
1996	7.25
1997	8.484
1998	8.207
1999	6.986
2000	6.459
2001	6.412
2002	5.636
2003	5.61
2004	5.334
2005	5.877
2006	5.925
2007	4.341
2008	5.035
2009	5.405
2010	6.107