Year	Percent
2000	3.8905
2001	5.6866
2002	6.7219
2006	3.15
2007	1.7076
2008	3.657
2009	3.605
2010	7.0023
2011	7.2263
2012	4.9575
2013	8.313
2014	7.1719
2015	4.0817
2016	3.2535
2017	3.5562