Year	Percent
1990	1.48834
1991	0.87948
1992	0.89418
1993	0.67097
1994	1.13301
1995	1.16343
1996	2.10784
1997	2.02554
1999	1.94549
2000	1.7597
2001	0.60206
2002	2.70794
2004	0.94273
2005	1.54877
2006	13.49129
2007	3.09187
2008	12.21131
2009	0.98438
2010	0.8434
2011	1.20721
2012	5.9453
2013	3.60721
2014	1.71449
2015	2.89365
2016	5.20645