Year	Percent
2000	2.86118
2001	3.21566
2002	2.22071
2003	2.37776
2004	2.00016
2005	1.95966
2006	1.90182
2007	3.51752
2008	2.71127
2009	2.92355
2010	1.81897
2011	4.20128
2012	2.2254
2013	3.74086
2014	3.32335
2015	6.84205
2016	5.1848
2017	6.75815