Year	annual %
1961	-0.5240519528566983
1962	0.2258378426980067
1963	0.30454943912275717
1964	0.14560189955569686
1965	-0.018979533793096432
1966	-0.5615229766322538
1967	-0.5486982216259193
1968	-0.07040000290761408
1969	-0.012805327033532814
1970	-0.13134923158995293
1971	0.17296055046893521
1972	-1.4343286300716676
1973	-2.192480089859893
1974	-0.6926203973201885
1975	-1.1459806491761437
1976	-1.498359435853912
1977	-1.6431523159352626
1978	-2.4396189714817202
1979	-2.032671027916088
1980	-1.5733883374197895
1981	-1.3128148865676952
1982	-0.7309753723611088
1983	-1.0186716238087736
1984	-1.2223399423228616
1985	-1.2257201259301602
1986	-1.7735233293986814
1987	-2.542715081863661
1988	-3.2193181162156685
1989	-3.317687283820275
1990	-2.819207353808935
1991	-2.4583766732269736
1992	-3.6972701273487103
1993	-5.237927826485696
1994	-5.331014811789358
1995	-5.261505344142487
1996	-4.858605771462574
1997	-5.2489831067184305
1998	-7.441262670637962
1999	-9.326601312221298
2000	-9.898267943299013
2001	-6.499639043735421
2002	1.4123924067006748
2003	3.3598346625986264
2004	3.0196166399462525
2005	3.840759895799438
2006	3.8538674510465407
2007	3.261592904306675
2008	2.5473241872942314
2009	1.9320272521046233
2010	2.5570629162485004
2011	2.6945180137994447
2012	2.0092469105601296
2013	2.19374585186575
2014	2.304745102690334
2015	2.1815113478314543
2016	1.8085379975602327
2017	0.9586687022390605
2018	0.011564035861392222
2019	-0.7661093767574224
2020	-1.266433436496546
2021	-1.4561488756502257
2022	-1.4533649457358284
2023	-1.4131700627518757