Year	Percent
1996	2.52784
1997	7.48527
1998	2.81967
1999	-11.828
2000	8.10408
2001	5.1734
2002	7.21454
2003	4.63778
2004	9.30125
2005	5.85798
2006	5.31765
2007	6.31897
2008	5.81619
2009	-2.72669
2010	0.98965
2011	2.20517
2012	-0.53373
2013	3.07206
2014	-1.36933
2015	1.25747
2016	3.33708
2017	2.39044