Year	Percent
2000	13.30692
2001	7.18492
2002	27.24724
2003	14.3626
2004	22.60535
2005	28.56854
2006	9.4607
2007	11.02017
2008	21.82955
2009	-25.3128
2010	14.16107
2011	18.25072
2012	8.98067
2013	-6.66792
2014	-17.30903
2015	-15.25097
2016	14.00464
2017	24.43957