Year	Percent
2002	-26.41064
2003	-28.73596
2004	-24.34535
2005	-21.13414
2006	-25.46879
2007	-33.92
2008	-36.78857
2009	-37.66994
2010	-38.26353
2011	-41.01055
2012	-39.10367
2013	-40.34102
2014	-40.42669
2015	-35.24662
2016	-31.76247