Year	Percent
1990	0
1997	2.66291
1998	4.18379
1999	5.93698
2000	19.13164
2001	21.17111
2002	23.67024
2003	28.32578
2004	32.88608
2005	39.07013
2006	45.29865
2007	51.61
2008	58
2009	65.07
2010	65
2011	65
2012	65.017
2016	94.44447