Year	Percent
2001	7.85136
2002	5.93233
2003	7.65969
2004	20.96616
2005	23.77706
2006	3.43458
2007	3.0593
2008	38.56002
2009	-22.44064
2010	26.453
2011	27.06157
2012	11.85439
2013	-4.83954
2014	-3.17553
2015	-36.51589
2016	-19.45722
2017	27.3913