Year	Percent
1987	0.01574
1988	0.02255
1989	-0.01657
1990	0.01094
1991	-0.02448
1992	0.04001
1993	-0.02062
1994	0.01354
1995	0.03039
1996	-0.01739
1997	0.10874
1998	-0.19082
1999	0.04048
2000	0.77374
2001	-0.7137
2002	0.42185
2003	0.22332
2004	0.44511
2005	0.60872
2006	1.54919
2007	1.65174
2008	0.90448
2009	0.73936
2010	0.56684
2011	0.63149
2012	0.27617
2013	-0.2909
2014	1.27213
2015	0.80906
2016	-0.81816
2017	0.33397