Year	Percent
1991	-10.87087
1992	-40.74445
1993	-6.63838
1994	7.94983
1995	9.10349
1996	7.50697
1997	4.47954
1998	8.14226
1999	3.95769
2000	6.5703
2001	10.23657
2002	13.8115
2003	14.64886
2004	11.10084
2005	14.60488
2006	14.06881
2007	14.73597
2008	7.81292
2009	-13.5664
2010	2.60041
2011	4.76299
2012	6.96413
2013	2.88634
2014	3.14688
2015	2.82038
2016	-0.06948
2017	7.29332