Year	Percent
2001	3.91737
2002	2.96961
2003	2.79528
2004	2.56797
2005	2.09053
2007	1.20603
2008	1.20827
2009	1.44839
2010	1.5948
2011	1.35912
2012	1.24096
2013	1.10964
2014	1.07409
2015	0.96573
2016	1.04952
2017	1.1494