Year	annual %
1971	0.06960067037107365
1972	-2.3587284847459387
1973	-12.032468679885582
1974	-18.04916262585124
1975	-17.522905934313016
1976	-0.033312190498577365
1977	-9.894258416492093
1978	0.7434939410007928
1979	7.189778106860118
1980	-23.813006171196548
1981	-23.004507346479812
1982	-16.014766716933877
1983	2.771250098854594
1984	0.7187340297681146
1985	-8.065119528422542
1986	4.203254037101161
1987	3.9024035029005404
1988	-13.460824430886944
1989	21.286686758040062
1990	-2.662005070419937
1991	-26.234943550689266
1992	51.09719241226463
1993	31.315592770227056
1994	9.264680732119885
1995	3.9640428434673254
1996	-2.235624947276463
1997	-0.9095484948488348
1998	0.35338096662702867
1999	-4.816954703661281
2000	1.584750205791181
2001	-2.643265205248852
2002	0.21220915397660178
2003	14.303299855476894
2004	7.579610784590443
2005	6.5554966157057635
2006	1.69160145749467
2007	-0.06999309233700046
2008	-3.0932247054017665
2009	-11.883218069405302
2010	-7.273189377311866
2011	2.6379496689340414
2012	-1.2525608488937223
2013	-5.836885933913081
2014	-2.573382874289109
2015	-3.1944129440563955
2016	-0.6168150856300514
2017	-6.486789108143981
2018	-2.128278157627676
2019	-1.447268857565902
2020	-3.521855321787058
2021	4.3376243562723005
2022	5.671842216695126
2023	-3.165462622075566