Year	annual %
1961	0.3468514206720812
1962	0.1414503072173119
1963	0.043941234432409715
1964	-0.007659660427492554
1965	-0.14830511578644234
1966	-0.2312825574051658
1967	-0.22866841248502112
1968	-0.33468889552815995
1969	-0.3830288076326269
1970	0.08460626990043352
1971	1.2229395078667409
1972	1.093336961624658
1973	0.9924412149868687
1974	0.9708414005020956
1975	1.0436930787527388
1976	0.9937483791142085
1977	0.9760801674546684
1978	1.012878413906762
1979	1.0492834856008528
1980	0.8188479781131122
1981	0.4595156136542897
1982	0.38400509151747997
1983	0.32688242840622195
1984	0.28246190256938064
1985	0.29505088370594024
1986	0.33781306477401074
1987	0.3905557238440167
1988	0.3989808944234028
1989	0.48384809148274144
1990	0.3880169915492644
1991	-0.16816454772585132
1992	-0.22786686968801462
1993	-0.30342560600587376
1994	-0.3961706054956551
1995	-0.4401170676087247
1996	-0.48481292037251933
1997	-0.5026893557060816
1998	-0.566869337167148
1999	-0.5940400726722572
2000	-0.427401445502511
2001	0.07518511835033337
2002	0.14074164448392423
2003	0.05860660306250054
2004	0.11543951068921388
2005	0.12085586676957405
2006	0.1523705436910774
2007	0.08813916465861382
2008	0.09211112238691044
2009	0.033689113175654484
2010	-0.009701913556924069
2011	-0.1411977640741071
2012	-0.08442033209004762
2013	-0.15485807140905195
2014	-0.14989046834531905
2015	-0.1999563395203836
2016	-0.19571735515305022
2017	-0.3097206298710091
2018	-0.4044094690656266
2019	-0.504039424834474
2020	-0.11357287299668428
2021	-0.9294112920030102
2022	-0.6325418054714333
2023	-0.42748163800230543