Year	Percent
1991	96.3565
1992	1472.21636
1993	1243.46166
1994	1546.72682
1995	160.88867
1996	38.89963
1997	16.13573
1998	5.66284
1999	13.28014
2000	17.4264
2001	10.15643
2002	5.80322
2003	11.73852
2004	16.13163
2005	17.87483
2006	21.55171
2007	15.5271
2008	20.93654
2009	4.69109
2010	19.54229
2011	20.54296
2012	4.78557
2013	9.49908
2014	5.77124
2015	1.82355
2016	13.63843
2017	6.38039