Year	Percent
1991	1.21812
1992	2.81598
1993	-1.12983
1994	1.81577
1995	1.33817
1996	0.88934
1997	1.89951
1998	2.94965
1999	0.89787
2000	3.23178
2001	0.8944
2002	1.02885
2003	0.8533
2004	1.09001
2005	2.68885
2006	0.35423
2007	0.53034
2008	0.84369
2009	1.06991
2010	4.81959
2011	-15.03783
2012	-0.31078
2013	2.0924
2014	-2.73653
2015	-38.71102
2016	-35.92985