Year	Percent
1995	4.114
1996	4.604
1997	6.316
1998	6.388
1999	3.722
2000	3.32
2001	3.982
2002	3.868
2003	5.121
2004	4.384
2005	4.039
2006	3.883
2007	4.006
2008	4.476
2009	4.348
2010	4.468