Year	Percent
1987	0.02178
1988	0.06816
1989	0.01002
1990	-0.01215
1991	-0.05547
1992	-0.02622
1993	-0.02965
1994	0.00186
1995	-0.06124
1996	-0.28191
1997	-0.01518
1998	0.0005
1999	0.12684
2000	0.02497
2001	0.06863
2002	0.1741
2003	0.12631
2004	0.74495
2005	0.31494
2006	0.85473
2007	2.18905
2008	2.05384
2009	0.69625
2010	1.16429
2011	0.85751
2012	0.76059
2013	0.63047
2014	1.55531
2015	0.20176
2016	1.58908
2017	1.54859