Year	Percent
1995	3.649
1996	4.15
1997	4.177
1998	4.421
1999	4.718
2000	5.515
2001	5.664
2002	6.035
2003	4.712
2004	4.2
2005	3.68
2006	3.552
2007	4.56
2008	5.707
2009	5.711
2010	5.442