Year	%
1990	96.98922
1992	97.14527
1995	97.12852
1998	91.68054
2000	79.5387
2002	82.92574
2003	65.61777
2004	66.4319
2005	30.70888
2006	55.4814
2008	57.00072
2009	57.40087
2010	49.44226
2011	44.6431
2012	44.81828
2013	28.11936
2015	27.98555
2016	53.05301