Year	Percent
1990	-0.24082
1991	-0.85957
1992	6.76611
1993	4.52436
1994	7.09053
1995	1.78921
1996	2.51495
1997	-2.71288
1998	-3.193
1999	-4.72252
2000	-4.02531
2001	-4.32997
2002	-5.39027
2003	-4.09179
2004	-8.50086
2005	-7.82721
2006	-4.54834
2007	-3.80768
2008	-7.44796
2009	-3.16415
2010	-9.21072
2011	-10.72111
2012	-8.56465
2013	-10.49214
2014	-9.91895
2015	-8.54466
2016	-9.8078
2017	-6.70425