Year	annual %
1971	-3.06337482173997
1972	-3.2199412571347636
1973	-2.746268455080326
1974	-0.85108952074917
1975	0.4616427404734935
1976	0.5005588185089209
1977	2.0486302325509342
1978	0.12195389840098869
1979	0.33052352569970367
1980	0.01616229668954361
1981	-1.4519662518499103
1982	-2.576520957255184
1983	-0.4801643878474522
1984	2.0573848137912023
1985	2.770455628231943
1986	2.8656202852711914
1987	3.0490972116907074
1988	3.1090055489913766
1989	3.145481135061061
1990	3.1199785837950884
1991	2.577711403710879
1992	-8.528866385532183
1993	-14.313205707005466
1994	4.804686151835824
1995	8.070950999227193
1996	7.143833555200004
1997	-0.8589725335699825
1998	-1.0029045200943898
1999	-7.977318608642335
2000	-4.312259080229481
2001	5.9525270709121685
2002	4.894523884511457
2003	-3.3645075425793323
2004	3.7980804719798016
2005	3.810311623989378
2006	0.9555251590281983
2007	3.083331129018461
2008	-4.187810942628332
2009	-5.900999392660282
2010	0.6328999980993473
2011	6.8471983848772595
2012	2.9122364455974434
2013	-2.268430480253315
2014	5.347705875806554
2015	9.760748874804094
2016	0.7578769955364493
2017	-3.653175183024615
2018	0.4814010101780468
2019	0.6165872523045977
2020	-7.856035406944059
2021	-14.411691444420867
2022	-0.5333641154027617
2023	0.4317428594559374