Year	Percent
2000	34.50491
2001	33.29404
2002	24.9549
2003	42.01176
2004	49.3558
2005	53.2336
2006	64.12257
2007	98.0407
2008	34.90724
2009	80.21787
2010	69.97082
2011	46.97407
2012	49.7912
2013	41.26708
2014	34.3606
2015	27.21841
2016	42.28336
2017	46.44673