Year	%
1997	-1.4965664286061513
1998	-6.63847352852443
1999	-19.19446990786883
2000	-1.2667123824680226
2001	-25.679592814671835
2002	-13.580513131225588
2003	-8.800701381792477
2004	-4.318603966986133
2005	-9.739032100681971
2006	-6.443934285540725
2007	-3.9636345051976654
2008	-2.798948339491801
2009	-0.9427393500458024
2010	-0.9174902605064036