Year	annual %
1961	1.27361173639922
1962	1.08957078508003
1963	0.964784739342594
1964	1.16087490089054
1965	1.20066859355668
1966	1.26618950294397
1967	1.32699272877898
1968	1.36836942466346
1969	1.4158512666281
1970	1.41515938798944
1971	1.33277548782457
1972	1.33035143434523
1973	1.3850176137473
1974	1.38730701742993
1975	1.4011926096227
1976	1.41712729795471
1977	1.43283243190663
1978	1.45104478724509
1979	1.467384366697
1980	1.4615286603352
1981	1.46672929396033
1982	1.18533033707416
1983	0.822133663117244
1984	0.718678743782738
1985	0.64267901961967
1986	0.569048697917746
1987	0.504012069851689
1988	0.435755896204262
1989	0.368133112506741
1990	0.232540020548636
1991	-0.366981881454498
1992	-0.920565781570569
1993	-1.05258466620153
1994	-0.72549836971952
1995	0.0759374606317513
1996	0.515914160044682
1997	0.132444874720077
1998	0.532116992485007
1999	0.478003427125101
2000	0.455448702114895
2001	0.420168685369998
2002	-0.726260079023056
2003	0.127038105260946
2004	-0.323800435972555
2005	-0.539897211401132
2006	-0.55220427661592
2007	-0.570953120211137
2008	-0.578593804248589
2009	-0.646827222901633
2010	-0.63937448291812
2011	-0.458327097678151
2012	-0.391858319665176
2013	-0.368848270904885
2014	-0.268678976911211
2015	-0.267729528193655
2016	-0.320367473371963
2017	-0.40242158713311
2018	-0.507220756968942
2019	-0.679308688552216
2020	-1.07910572041332
2021	-1.02945804668594
2022	-0.294481335654044
2023	-1.0830878621445