Year	%
1996	-3.889803669250615
1997	8.143820152495037
1998	28.8771592096907
1999	-7.026456176280469
2000	-3.0843186286307525
2001	14.357233976997945
2002	8.275501085710818
2003	6.40951122422722
2004	3.8441437090728403
2005	-0.4499607374919676
2006	3.8836211455910026
2007	6.413407628825132
2008	-1.9752373757754544
2009	29.251710395806807
2010	0.1755766263045103
2011	5.830259549546833
2012	17.571334415571258
2013	11.788754908068821