Year	annual %
1961	0.26234637658191867
1962	0.26401410837901007
1963	0.31965429371197074
1964	0.3513789368078711
1965	0.38742550852157986
1966	0.4114514678709943
1967	0.42131642488003734
1968	0.37583194075249193
1969	0.27808119040171553
1970	0.2177875942501407
1971	0.1601721048108265
1972	-0.1830747913960591
1973	-0.24998006298065759
1974	-0.3450341556118184
1975	-0.4480170072883378
1976	-0.6571714294072585
1977	-0.8869185851971362
1978	-0.9992641881543928
1979	-1.054927561687683
1980	-1.1001317227792278
1981	-0.5253696960250567
1982	0.7967008378258839
1983	0.9127424981041277
1984	0.904486805841068
1985	0.9175678055117631
1986	0.9512055413355672
1987	0.7410796946323731
1988	0.7631952747527887
1989	0.7254949488409939
1990	0.6455301425412073
1991	0.2647329894026755
1992	-0.27832795022481355
1993	-0.399610004334931
1994	-0.47662032507936614
1995	-0.5363417931688602
1996	-0.1633066502114803
1997	0.5074462974459596
1998	0.5117204020673318
1999	0.47283561611113506
2000	0.39157596915654164
2001	0.6058372414852048
2002	0.9697749901409486
2003	0.9978952385148654
2004	1.005473909340537
2005	1.0170424544919878
2006	1.008938663473249
2007	1.0136621884914374
2008	1.013955717762628
2009	1.0058498572917784
2010	0.9753157368280028
2011	0.6830152725945171
2012	0.40270967842011496
2013	0.6333169025777726
2014	0.5952518229543202
2015	0.6833739578565117
2016	0.8368415616961835
2017	0.8573110298131215
2018	1.2278688235542163
2019	1.3332762387768595
2020	1.1045641898785472
2021	1.0700911243188707
2022	1.016255692427356
2023	0.9877304747400962