Year	Percent
1982	4.48635
1983	1.88126
1984	1.66467
1985	6.43257
1986	1.9104
1987	2.72486
1988	-2.17519
1989	0.11283
1990	-2.27469
1991	6.21402
1992	0.08087
1993	3.57752
1994	4.74554
1995	3.44956
1996	-0.29385
1997	-0.49915
1998	2.28524
1999	3.39631
2000	2.85237
2001	3.04602
2002	2.82141
2003	1.48952
2004	-0.96377
2005	0.94377
2006	-1.44428
2007	-4.79121
2008	2.45093
2009	1.69921
2010	3.05548
2011	2.35268
2012	0.53079
2013	-3.46736
2014	1.63453
2015	3.14436
2016	2.64796
2017	1.84623