Year	annual %
1961	0.017757027606874774
1962	-0.9010767400991299
1963	-0.9311923559930497
1964	-0.9420414446579234
1965	-1.0445206658661923
1966	-0.9428840071639948
1967	-0.1661216626796784
1968	-0.36776993397493435
1969	-0.6292449807903133
1970	-0.6069140636530268
1971	1.141119780061544
1972	1.6573001258885163
1973	1.7207749888326536
1974	1.8917103616958402
1975	1.9526583546785794
1976	1.7576494865155143
1977	1.0068389484258806
1978	0.8317732499078514
1979	0.8257423816895024
1980	1.1253796088041694
1981	1.0318534649866196
1982	0.5203861453888634
1983	0.3189284528363707
1984	0.27415597300108946
1985	0.24361030943912598
1986	0.3661651293371963
1987	1.2330234802062212
1988	1.2114019977626747
1989	1.7088996505157161
1990	1.4222963241323316
1991	1.080359530116824
1992	0.035096017557138606
1993	-0.05422784751857769
1994	-0.058073938682604465
1995	-0.12754520176483083
1996	-0.19867650445925916
1997	-0.7862178979497437
1998	-0.9588357985125917
1999	-0.9845662178269898
2000	-0.8795274954639505
2001	-0.544807232890262
2002	0.6977076089733178
2003	0.5056512899126391
2004	0.5420737715665314
2005	0.5604665180875882
2006	0.554720580716477
2007	0.041497320062561315
2008	0.15115277185665385
2009	0.21360753173995708
2010	0.17673797216248474
2011	0.13782919765532964
2012	0.8666354737126261
2013	0.8357783296421025
2014	0.7886800516484672
2015	0.5417720195188579
2016	0.9125255784975059
2017	0.9276932090188277
2018	1.1056146782850174
2019	1.0790412007910068
2020	0.6514157155201811
2021	0.05914060380018936
2022	1.2708624067838785
2023	2.3276446657685224