Year	Percent
1990	-3.3735
1991	-5.25905
1992	-14.56844
1993	-8.56461
1994	-12.46131
1995	-4.16919
1996	-3.45967
1997	1.56777
1998	-5.14313
1999	6.72979
2000	10.4636
2001	5.53868
2002	5.22667
2003	7.78378
2004	7.60832
2005	6.78276
2006	8.50802
2007	8.72086
2008	5.29421
2009	-7.84864
2010	4.45683
2011	5.20283
2012	3.48159
2013	1.56886
2014	-1.04302
2015	-3.03757
2016	-0.40759
2017	40.6658