Year	Percent
1998	0.01917
1999	0.08773
2000	0.04897
2001	0.6284
2002	0.21709
2003	0.03193
2004	-0.22401
2005	0.81645
2006	0.05076
2007	0.39964
2008	0.11289
2009	0.78712
2010	1.00546
2011	0.32405
2012	1.76915
2013	0.90114
2014	-1.7647
2015	0.6595
2016	1.86125
2017	1.55635