Year	Percent
2000	4.4641
2001	4.6436
2002	5.7919
2003	5.6424
2004	3.7817
2005	5.7941
2006	6.362
2007	6.6486
2008	5.6461
2009	6.1191
2010	6.1495
2011	5.9224
2012	5.5508
2013	5.3575
2014	4.4684
2015	4.4944
2016	4.3983
2017	3.8642