Year	Percent
1999	-0.50061
2000	-1.83438
2001	0.26506
2002	0.57676
2003	2.23306
2004	3.17725
2005	1.597
2006	1.29419
2007	1.10035
2008	0.45149
2009	0.8035
2010	-0.53299
2011	-1.8403
2012	3.54058
2013	5.52304
2014	2.90227
2015	2.97765
2016	2.90655
2017	2.81229