Year	Percent
2000	93.40343
2001	74.90649
2002	72.27583
2003	63.26752
2004	68.93145
2005	64.21418
2006	68.5358
2007	65.77216
2008	71.16909
2009	52.47375
2010	61.9053
2011	69.96601
2012	70.31582
2013	77.92939
2014	71.83124
2015	53.46644
2016	52.87351
2017	53.50816