Year	annual %
1961	-0.1886348118888441
1962	-0.11807770884239004
1963	-0.07091360656467084
1964	-0.07096392964865551
1965	-0.16577860516633536
1966	-0.3086055861693596
1967	-2.3819242306086483
1968	-10.517115501992661
1969	-13.009821086209538
1970	-6.655328302878772
1971	1.697722787283297
1972	2.903378285564092
1973	0.6894417782437585
1974	-2.338179189145835
1975	-5.216862690144184
1976	-5.6465214101353585
1977	-5.94670596908293
1978	-6.161792890092052
1979	-6.309145922415511
1980	-0.2574003995172877
1981	9.65590091892323
1982	10.364297288257085
1983	9.646026618756231
1984	8.972162177337141
1985	8.31363949886517
1986	7.5258455483566635
1987	6.719753886827723
1988	5.880056711022139
1989	5.262120652346344
1990	2.6728564847132157
1991	0.9691172153176373
1992	-0.0401929265861022
1993	-0.020102522934319675
1994	-0.020106564861147695
1995	2.286154630521957
1996	8.167417726408662
1997	11.808486777964928
1998	10.632576669802171
1999	9.45204982681576
2000	4.089045827267487
2001	-1.926940244840919
2002	-3.7948490945460294
2003	-4.195463964640627
2004	-4.5543521172141626
2005	-4.9250392757750285
2006	-5.228714150579207
2007	-5.500181757475713
2008	-5.766096176846933
2009	-5.92683215949567
2010	-6.1981628923794405
2011	-3.8101829633188173
2012	-1.1955735920148884
2013	-1.3405606162230144
2014	-1.5133527115017114
2015	-1.6264143738590995
2016	-1.74469136037207
2017	-1.7989415016719683
2018	-1.9030293553796853
2019	-1.9641349979484646
2020	-1.6339834334489058
2021	-1.336653564030783
2022	-1.0017614452317787
2023	-0.6819069232038278