Year	%
1983	60.54447
1984	58.3915
1985	56.80932
1987	56.25882
1994	68.35987
2001	78.36208
2002	81.75657
2003	83.72618
2004	78.58976
2005	88.62299
2006	98.94295
2007	91.5475
2008	92.05493
2009	89.84454
2011	96.43843
2012	91.65313
2016	91.4969