Year	Percent
1995	6.773
1996	6.138
1997	6.083
1998	6.617
1999	5.895
2000	5.59
2001	5.658
2002	6.253
2003	6.934
2004	6.609
2005	6.41
2006	6.392
2007	6.355
2008	6.634
2009	7.799
2010	7.722