Year	Percent
1995	9.36578
1996	19.75153
1997	8.82271
1998	4.57422
1999	15.50376
2000	5.62982
2001	3.60113
2002	2.97333
2003	3.33979
2004	3.59365
2005	11.16097
2006	11.93305
2007	12.6501
2008	3.84288
2009	14.4729
2010	6.563
2011	4.50745
2012	7.66007
2013	52.44547
2014	57.14815
2015	14.24267
2016	1.93738