Year	Percent
1995	3.449
1996	3.542
1997	3.619
1998	3.199
1999	3.231
2000	3.209
2001	2.998
2002	2.791
2003	3.247
2004	3.227
2005	3.494
2006	3.451
2007	3.4
2008	3.348
2009	3.601
2010	3.613