Year	annual %
1961	0.8009092949412806
1962	0.5564019480251956
1963	0.4484324318134462
1964	0.3392652280204128
1965	0.20703596338779176
1966	0.046747258389312374
1967	-0.12102754021558007
1968	-0.28449171812067875
1969	-0.4387636776579629
1970	-0.5604506760673604
1971	-0.5050713528414524
1972	-0.38988773764852586
1973	-0.3768496991081377
1974	-0.4123902918172074
1975	-0.4645073445437969
1976	-0.5239093971290816
1977	-0.542432838206932
1978	-0.515719905382835
1979	-0.49024323986273766
1980	-0.34724446969732636
1981	0.921109764867662
1982	0.8661697372373368
1983	0.8245235654787594
1984	0.7529415934890932
1985	0.8688621332525062
1986	0.978915138240659
1987	0.8360577169206629
1988	0.6683670867077854
1989	0.5271405798850888
1990	0.4191012545126948
1991	0.36146273550415114
1992	0.3230749520112903
1993	0.2540277894256521
1994	0.1671217046622951
1995	0.08660255669999616
1996	0.018025678137396913
1997	-0.04728180724994927
1998	-0.07794471425736098
1999	-0.07153112675288305
2000	0.08310754560064236
2001	0.8997000983449216
2002	0.9747461114355956
2003	0.9815507514961247
2004	0.981839718288321
2005	0.9972746664886913
2006	0.9879090314791974
2007	0.9920801898901346
2008	0.9850113859281565
2009	1.0140665427160567
2010	1.057572687096663
2011	1.0973159106780872
2012	1.0834437507241774
2013	1.0250910595186928
2014	0.9383668071425393
2015	0.8554364534378442
2016	0.7726537612833584
2017	0.7255479578880036
2018	1.7948588300335095
2019	1.0017160250496242
2020	-0.17681604981365437
2021	0.3848809534950676
2022	0.1913964675734659
2023	0.04156558149841915