Year	Percent
1995	5.19
1996	5.335
1997	5.845
1998	5.228
1999	5.294
2000	4.818
2001	4.64
2002	4.383
2003	4.801
2004	5.143
2005	4.163
2006	3.992
2007	3.45
2008	3.333
2009	3.292
2010	3.404