Year	Percent
1995	4.723
1996	4.84
1997	5.074
1998	5.268
1999	5.108
2000	5.207
2001	5.273
2002	5.512
2003	5.386
2004	5.973
2005	6.031
2006	5.827
2007	5.378
2008	5.93
2009	5.819
2010	5.255