Year	%
1989	35.39529
1995	42.71806
1996	41.15033
2000	53.16795
2001	51.29007
2002	53.45215
2003	62.16048
2004	61.34342
2005	61.65403
2006	75.21687
2007	71.61401
2008	69.48011
2009	77.24326
2010	93.54942
2011	91.83153
2012	90.91023
2013	89.1536
2014	89.03745
2015	74.72394
2016	71.01626