Year	Percent
1991	-12.15844
1992	-7.93924
1993	1.66712
1994	4.08315
1995	7.35519
1996	4.16951
1997	-4.54172
1998	-1.88438
1999	-0.24506
2000	2.52772
2001	7.07579
2002	7.12749
2003	6.28814
2004	8.97777
2005	4.8172
2006	8.69758
2007	8.45409
2008	10.07901
2009	-5.12324
2010	-2.23262
2011	2.53286
2012	1.68988
2013	3.91675
2014	3.46314
2015	4.4644
2016	5.42275
2017	7.57933