Year	%
1980	-1.5566549850123559
1981	9.721909503595814
1982	19.78189131243239
1983	4.257201655639028
1984	-2.9689635091066973
1985	-9.271153196581565
1986	-2.683864921665936
1987	-2.390604783510029
1988	-12.114166620963644
1989	-5.263682317214748
1990	1.4816382361473799
1991	6.327978998973603
1992	6.902446347659562
1993	1.6379702681185393
1994	4.067885249572926
1995	6.776493708617168
1996	-1.3884807212347325
1997	8.530342197139284
1998	3.349689855071348
1999	0.4732558778866619
2000	1.1458252370570974
2001	6.86638447526455
2002	14.844701007510606
2003	12.72615935722537
2004	5.15195653567252
2005	0.2301805685446808
2006	10.749845131893611
2007	9.606601365519346
2008	6.554592167788273
2009	-1.175676556126915
2010	3.505910613105111
2011	-1.4676190281070576
2012	7.754602060160613
2013	8.526476400007443
2014	-0.5510767768051837
2015	4.067935711766671
2016	-4.115021481403405
2017	9.784192478976673
2018	6.4391200606277
2019	5.85851094935516
2020	1.3134885883788125
2021	-2.889285696004951
2022	-7.403099178657506
2023	4.517094129015742