Year	annual %
1961	1.0047306463878045
1962	0.9749380844003473
1963	1.034135379473253
1964	1.0041517472467862
1965	0.9653516419083572
1966	0.8799674190524902
1967	1.858631738520207
1968	1.6133868739784223
1969	2.228479140263525
1970	0.2784641368223929
1971	-2.857077238399466
1972	-4.44475670336267
1973	-4.5808028264410074
1974	2.8384119317434986
1975	4.455421983770505
1976	4.508038277024217
1977	4.485371614865686
1978	4.4899507065459945
1979	4.461945292207421
1980	4.59419004882339
1981	2.502166218842661
1982	2.047902533060666
1983	2.0348817980849727
1984	1.994298802347869
1985	1.9890309025049766
1986	1.9039287163319294
1987	1.8033866876032694
1988	1.5605165784815518
1989	1.5554387808627308
1990	1.3639703418857996
1991	1.1860776553190648
1992	1.0507121709923706
1993	0.9314771274547388
1994	0.8273924531693408
1995	0.7258048400980026
1996	0.6381491757899099
1997	0.5814140589325857
1998	0.5198154390926223
1999	0.1862414692676547
2000	-0.9405648425299553
2001	-1.3235052866614039
2002	-1.5343423571317274
2003	-1.705590471611276
2004	-1.8164846503163454
2005	-1.901089875391008
2006	-1.976947092435091
2007	-2.0566446507258527
2008	-2.174436386605731
2009	-2.1880909997817892
2010	-2.1094723829414934
2011	-2.633713994683995
2012	-3.244326663076801
2013	-3.415282846097148
2014	-3.600499684142443
2015	-3.768454775692267
2016	-3.9508572519233773
2017	-4.113393570373593
2018	-4.289879132646671
2019	-4.472289999397803
2020	-4.671332022459288
2021	-4.856715999106916
2022	-2.804954209630578
2023	-0.6066071173599913