Year	Percent
1990	0.88488
1991	0.8447
1992	1.10873
1993	1.12569
1994	0.89436
1995	-0.99029
1996	0.33352
1997	0.14904
1998	0.04979
1999	0.06332
2000	0.10587
2001	0.24974
2002	0.32779
2003	0.20356
2004	0.185
2005	0.11243
2006	0.01793
2007	0.00586
2008	-0.01791
2009	0.00514
2010	0.00067
2011	-0.38658
2012	-0.23027
2013	-0.28267
2014	-0.26417
2015	-0.29167
2016	-0.31922
2017	-0.27589