Year	annual %
1961	0.39982558993314904
1962	0.30210448275329055
1963	0.19161279681887972
1964	0.06260263786704703
1965	1.3102174546848417
1966	1.2494380552655326
1967	1.1297040623342196
1968	1.0056138695082348
1969	0.874066620028147
1970	0.7516294094945659
1971	0.6079613658680642
1972	0.4924131094397058
1973	0.4491055415262349
1974	0.45525004230144905
1975	0.4395062820466962
1976	0.3811507346230339
1977	0.4107429315095489
1978	0.4568065360940164
1979	0.44697195704336895
1980	0.45685685074815585
1981	0.43788257499902344
1982	0.39931006895653254
1983	0.3905207992078492
1984	0.3529829310107768
1985	0.25323484338683755
1986	0.511366784842653
1987	0.6166744353609508
1988	0.5965275332847028
1989	0.585369384457263
1990	0.5644962629791178
1991	0.492652628808196
1992	0.4202480662747225
1993	0.40772807608640815
1994	0.37647179227879973
1995	0.31499022406390176
1996	0.23208240227729432
1997	0.19088578955249413
1998	0.12678729461513574
1999	0.05535406764553741
2000	-0.006462270914749714
2001	-0.0581400490234433
2002	-0.11006497571174605
2003	-0.1751694223097635
2004	-0.23551482735072368
2005	-0.30532543713811916
2006	-0.3793058816412821
2007	-0.44095985705430857
2008	-0.5198546163931916
2009	-0.5628568002506786
2010	-0.5694754360058351
2011	-0.6043635117982454
2012	-0.6641284835183208
2013	-0.7146343761618358
2014	-0.757944813295883
2015	-0.7679494116571834
2016	-0.6459416775775596
2017	-0.2014852300946438
2018	0.18313812864239312
2019	0.12022942211051253
2020	-0.24326727749872418
2021	-0.56654804825315
2022	-1.0207954082683923
2023	-1.3018864330416893