Year	annual %
1961	0.45163188182265224
1962	0.2872555032114797
1963	0.24842244569935226
1964	0.19589819561924918
1965	0.03993211593444303
1966	0.521643360232723
1967	0.3271248667010183
1968	0.13450433232811995
1969	1.8604276920374345
1970	5.804191082133985
1971	5.26709608607658
1972	2.8222017571044735
1973	0.6832167930814539
1974	0.22112784163780566
1975	-0.5941309456129271
1976	-0.4656821535694103
1977	0.5968958993698545
1978	0.20320943435277516
1979	-0.17463440369231376
1980	0.20818300754635258
1981	0.9281738671554225
1982	1.1991422759141168
1983	1.2335964543771345
1984	1.5991331761143202
1985	1.4639276631274696
1986	1.492401916670367
1987	1.6154049645528603
1988	1.5732157227239363
1989	1.602035275294345
1990	2.0163417877378533
1991	2.2259563078931337
1992	2.142849103022294
1993	2.224003859592241
1994	2.3107781382536703
1995	1.9045196726166713
1996	1.4433838666749874
1997	1.0091443003519667
1998	0.972700362682453
1999	0.9670602747061431
2000	0.9602608064513203
2001	0.9596661530294972
2002	0.950544034319143
2003	0.749905714032757
2004	0.5596561012372993
2005	-0.19815223615396102
2006	-0.3890892450070068
2007	-0.4339705436170291
2008	-0.47701083716254294
2009	-0.6338896014505878
2010	0.0913236512563128
2011	0.40689715500694346
2012	0.38713784469556944
2013	0.3459439453577241
2014	0.21035557836400456
2015	-0.9276806520843627
2016	-1.1715288718846906
2017	-1.2338219444039435
2018	-1.3133666658160854
2019	-1.4201167232341347
2020	-1.5027245185826292
2021	-1.6941255875197556
2022	-1.8708537444033904
2023	-1.9078910985523698