Year	annual %
1988	8.043904132191741
1989	-6.79859413778901
1990	31.782760974258082
1991	-7.138884273803399
1992	-17.231044301732084
1993	-1.151709730523848
1994	-19.327606519317854
1995	-9.254820120842737
1996	4.852566769891411
1997	-12.670604293629822
1998	5.460336201015096
1999	14.699548324291385
2000	3.8981998586553175
2001	2.8589289572974224
2002	-1.1056357210100032
2003	1.966409833104791
2004	3.675776670646826
2005	11.507496148359905
2006	9.444376583895561
2007	9.493054041795503
2008	13.009012167056895
2009	4.4437942422176775
2010	7.396303384057347
2011	12.713572371798534
2012	9.1080414455176
2013	8.190014191035374
2014	8.2927808288092
2015	4.592543895449225
2016	4.351811629191786
2017	4.718773372088108
2018	4.507069543856716
2019	4.688624039340098