Year	Percent
1991	93.73065
1992	1271.7687
1993	442.14789
1994	151.88942
1995	17.0913
1996	2.86479
1997	3.92971
1998	1.3912
1999	2.73839
2000	13.78729
2001	4.71895
2002	0.94361
2003	1.65203
2004	-0.16637
2005	4.89661
2006	3.25262
2007	4.59255
2008	5.49148
2009	0.29508
2010	2.04127
2011	3.72217
2012	1.003
2013	4.48329
2014	1.44646
2015	1.88709
2016	4.23296
2017	3.47011