Year	annual %
1961	1.607595568025611
1962	1.6226820119301963
1963	1.6627502955357243
1964	1.6654528548948961
1965	1.6122014064729338
1966	1.539355634359441
1967	1.4708616673154045
1968	1.4182543645013086
1969	1.3818840763154712
1970	1.355642503188779
1971	-0.058696191286369145
1972	-0.5558843165166968
1973	-0.7607659216653185
1974	-0.9565116509180686
1975	-1.144856958232324
1976	-1.338713938128875
1977	-1.5228023932113077
1978	-1.7061622383902324
1979	-1.8631159589279052
1980	-2.0036582867189736
1981	-1.9686086854198783
1982	-1.2070148812433277
1983	-0.9235688727923453
1984	-0.8960839656180948
1985	-0.879335937329263
1986	-0.8765696288748647
1987	-0.8442401323077418
1988	-0.8001042634949846
1989	-0.7836408192939641
1990	-0.8306271549056237
1991	-0.361646638442612
1992	0.07535354672391088
1993	-0.04585753130826452
1994	-0.1521466392278806
1995	-0.21931505116889166
1996	-0.2490043788300389
1997	-0.433977401645357
1998	-0.6147001838321352
1999	-0.6061721249950672
2000	-0.621836563030154
2001	-0.6448593381939192
2002	-0.6681199578397001
2003	-0.410479191458318
2004	-0.15901278721990902
2005	-0.20359305853745635
2006	-0.26144449462777686
2007	-0.30981941272696406
2008	-0.333863934240352
2009	-0.33253037063666024
2010	-0.3282655669716469
2011	-0.3204619452683706
2012	-0.3018398997498619
2013	-0.08968552378157807
2014	-0.054635570105629534
2015	-0.08195211296492268
2016	-0.12859561969066768
2017	-0.2533587830412387
2018	-0.33296994315131057
2019	-0.41604047829433943
2020	-0.5134942554718217
2021	-0.8236409128482666
2022	-0.8744363117088412
2023	-0.6996833902980485