Year	Percent
2000	3.0817
2001	4.1398
2002	2.7387
2003	5.5398
2004	6.0241
2005	3.275
2006	3.3474
2007	3.0825
2008	2.8436
2009	4.3832
2010	5.106
2011	5.0662
2012	10.8891
2013	14.2052
2014	18.2345
2015	17.4414
2016	13.5354
2017	9.4251