Year	Percent
1992	4.816
1993	9.123
1994	8.017
1995	5.473
1996	5.3115
1997	15.4466
1998	18.9315
2005	1.0774
2006	1.4356
2010	0.8711
2011	0.2932
2013	1.1597
2014	2.1188
2015	3.3183
2016	0.6879