Year	Percent
1995	50.98937
1997	21.46458
1998	38.10908
1999	46.48068
2001	56.31289
2002	64.13621
2003	70.32177
2004	80.89424
2005	88.481
2006	89.72928
2007	90.69376
2008	85.85882
2009	83.21737
2010	85.04953
2011	87.59651
2012	93.60384
2013	97.76396
2014	96.66404
2015	94.84115
2016	90.63109