Year	Percent
1995	5.06
1996	5.557
1997	6.161
1998	6.578
1999	5.554
2000	5.058
2001	3.956
2002	3.459
2003	3.777
2004	4.223
2005	4.298
2006	4.671
2007	5.77
2008	5.91
2009	5.216
2010	5.304