Year	Percent
1976	-0.06351
1977	-0.09149
1978	-0.01591
1979	-0.20855
1988	0.00694
1989	0.02694
1990	0.02282
1991	0.38017
1992	1.34317
1993	1.0175
1994	0.02973
1995	0.08968
1996	0.06048
1997	0.07599
1998	0.32886
1999	0.14989
2000	0.28264
2001	0.06322
2002	0.18245
2003	-0.10727
2004	0.49778
2005	0.74739
2006	0.13645
2007	0.73096
2008	0.52477
2009	0.4145
2010	1.28606
2011	1.37004
2012	1.54573
2013	1.38401
2014	0.70933
2015	0.46066
2016	0.04485
2017	0.46095