Year	Percent
1996	1.11662
1997	3.64959
1998	1.57142
1999	3.92235
2000	0.46866
2001	0.0835
2002	0.4465
2003	0.20554
2004	0.13689
2005	0.0606
2006	1.65961
2007	7.42812
2013	15.85023
2014	19.50951
2015	4.03112
2016	16.3163