Year	Percent
1994	6.944
1995	5.97
1996	11.765
1997	6.25
1998	21.705
2001	11.671
2005	7.2882
2008	2.0579
2012	1.9655
2013	4.7762
2014	7.7822
2015	2.6978
2016	2.0155
2017	1.9847