Year	Percent
1995	1.81067
2000	1.05571
2001	3.17168
2002	4.84345
2003	3.72058
2004	3.69824
2005	3.26716
2006	3.08453
2007	2.71745
2008	3.89834
2009	3.59634
2010	3.4259
2011	2.59083
2012	2.89934
2013	3.04177
2014	4.06249
2015	3.25152
2016	3.03866
2017	4.03258