Year	Percent
1995	4.754
1996	4.708
1997	3.887
1998	3.927
1999	3.744
2000	4.47
2001	4.646
2002	4.734
2003	5.43
2004	5.024
2005	4.967
2006	5.185
2007	6.492
2008	5.733
2009	6.837
2010	7.752