Year	Percent
1995	24.1032
1996	92.12334
1997	35.39047
1998	15.65998
1999	9.3483
2000	5.28747
2001	4.27327
2002	5.17386
2003	3.90534
2004	6.04276
2005	8.75124
2006	5.43597
2007	5.88194
2008	5.87491
2009	-2.54849
2010	1.53131
2011	1.86483
2012	0.28376
2013	3.57591
2014	2.25578
2015	3.95247
2016	3.70558
2017	3.31927