Year	%
1989	40.85737
1995	45.40672
1996	43.38168
2000	56.64442
2001	54.21907
2002	57.17961
2003	65.83511
2004	67.16684
2005	67.02198
2006	81.65943
2007	78.10196
2008	74.09259
2009	81.40488
2010	95.81046
2011	93.947
2012	93.08352
2013	92.78818
2014	91.05648
2015	78.4721
2016	75.28023