Year	%
1990	97.46806
1992	97.64872
1995	97.56077
1998	91.59988
2000	80.21699
2002	85.03535
2003	66.04524
2004	66.00153
2005	26.95332
2006	55.23373
2008	56.66882
2009	55.4654
2010	50.02025
2011	41.56968
2012	42.18505
2013	25.11879
2015	25.06678
2016	51.4439