Year	%
1982	32.06366
1984	47.80583
1985	45.28922
1989	53.81872
1991	48.99379
1992	48.75638
1993	50.62825
1994	54.03451
1998	50.91156
1999	60.39225
2001	61.84567
2004	59.486
2005	60.05943
2006	65.68993
2007	64.04881
2008	60.24307
2009	62.24687
2010	59.40572
2011	57.41808
2012	60.51934
2013	61.48243
2014	63.57427
2015	73.91133