Year	Percent
1995	5.153
1996	4.706
1997	4.984
1998	5.526
1999	5.6
2000	6.926
2001	9.462
2002	9.171
2003	6.127
2004	5.661
2005	7.628
2006	6.342
2007	6.235
2008	6.038
2009	8.739
2010	8.553