Year	Percent
1996	5.95251
1997	9.0952
1998	8.24853
1999	-0.43071
2000	4.56458
2001	7.40583
2002	7.62124
2003	11.4401
2004	7.75337
2005	9.496
2006	9.13482
2007	12.41448
2008	3.68904
2009	-13.86304
2010	3.79365
2011	8.46533
2012	5.22886
2013	4.55131
2014	4.43167
2015	2.99907
2016	3.65367
2017	5.31639