Year	Percent
1995	4.74
1996	5.894
1997	6.633
1998	6.51
1999	6.508
2000	7.246
2001	5.624
2002	5.214
2003	4.837
2004	5.263
2005	4.498
2006	4.939
2007	6.598
2008	6.541
2009	5.075
2010	5.064