Year	Percent
1996	1.46264
1997	1.71189
1998	5.76638
1999	12.29121
2000	7.28602
2001	4.46009
2002	4.09227
2003	4.9021
2004	5.8165
2005	8.27095
2006	5.84736
2007	4.473
2008	5.26153
2009	11.85784
2010	1.18795
2011	0.56365
2012	0.69026
2013	1.14759
2014	1.25637
2015	3.61789
2016	2.08114