Year	Percent
1995	3.497
1996	3.274
1997	3.231
1998	3.961
1999	3.628
2000	3.281
2001	3.957
2002	4.852
2003	3.662
2004	3.122
2005	2.527
2006	2.366
2007	2.794
2008	3.024
2009	3.888
2010	3.882