Year	annual %
1961	0.13778527877602664
1962	0.08709270729646917
1963	0.03453641879690838
1964	-0.01576948607718427
1965	-0.08767576905959738
1966	-0.14876521638191453
1967	-0.23158592548290716
1968	-0.32886671174591936
1969	-0.4414581921282209
1970	-0.5640794774833549
1971	-0.6081710772826041
1972	-0.6055142280070998
1973	-0.6054771292603022
1974	-0.5743927028376089
1975	-0.6740770055430174
1976	-1.8900362787520264
1977	-1.92949643704627
1978	-2.007219765845298
1979	-2.080087927130422
1980	-2.159965660886489
1981	-2.184669214272136
1982	-2.1862354006731763
1983	-2.159111784537137
1984	-2.142530929857959
1985	-2.121768210099912
1986	-2.323304633137285
1987	-2.425941987605763
1988	-2.39996831494161
1989	-2.363807395928376
1990	-2.4213297599173425
1991	-2.4602425131312917
1992	-2.4825538290058895
1993	-2.4943456399838277
1994	-2.5067277695209507
1995	-2.518111638787886
1996	-2.5770750659287778
1997	-2.893820701342064
1998	-2.941341762929061
1999	-2.989109264690921
2000	-3.1090276036312083
2001	-3.2461821632998307
2002	-3.3502207799274766
2003	-3.433923949502841
2004	-3.439580350224906
2005	-3.427128055315451
2006	-3.425896191634073
2007	-3.3773087551043206
2008	-3.359436385288818
2009	-3.338263844805456
2010	-3.350456061344768
2011	-3.3412082929090947
2012	-2.1034026979607368
2013	-1.6991100274243605
2014	-1.6876427099333595
2015	-1.6697490497772571
2016	-1.6975005516683443
2017	-1.7495251041048252
2018	-1.8531956644078498
2019	-1.9519375981903828
2020	-1.9446219816010968
2021	-2.064136770486078
2022	-2.0534244387775513
2023	-1.9347012259830345