Year	Percent change
2001	-6.633
2002	12.657
2003	0.186
2004	0.95
2005	-4.092
2006	-13.785
2007	-0.931
2008	2.584
2009	-9.88
2010	13.223
2011	21.081
2012	10.844
2013	-1.572
2014	-11.835
2015	4.195
2016	10.628
2017	-0.953