Year	annual %
1961	1.5230999789967652
1962	1.2385059034697425
1963	0.9334196475706904
1964	0.713597295201559
1965	0.43477336104025005
1966	0.30092396232495217
1967	0.13710380856538446
1968	-0.023176106255087175
1969	-0.1429982524329263
1970	-0.16722997654442928
1971	-0.12730128135974364
1972	-0.16988735014620202
1973	-0.20871539955736956
1974	-0.22134434520220647
1975	-0.2637075107891959
1976	-0.30859086587891266
1977	-0.408552417438155
1978	-0.48064207346278753
1979	-0.44684162633690655
1980	-0.38354397573747334
1981	-0.38074280542586264
1982	-0.3569339549591382
1983	-0.35883696169137297
1984	-0.3656441577598472
1985	-0.3950441013596799
1986	-0.4022962952011322
1987	-0.3796310408183703
1988	-0.527337310094748
1989	0.020078766198588716
1990	0.638374521722942
1991	0.41811687401853814
1992	0.257167104058806
1993	0.14872003590942728
1994	-0.06792114748143459
1995	-0.3125536647226998
1996	-0.02534926188579058
1997	0.37642446662675694
1998	0.7003460219430169
1999	0.576507085102478
2000	0.5265636659112819
2001	0.49562643697583136
2002	0.48261143134074247
2003	0.4274334200403558
2004	0.45493365561914645
2005	0.133101529980134
2006	-0.22381371771938835
2007	-0.17754180323137986
2008	-0.1362521397629174
2009	-0.07221229388888857
2010	-0.04577564535630747
2011	-0.003835879170275349
2012	0.04084759733218387
2013	0.027202182671265878
2014	-0.007058468461316203
2015	-0.7566166437783032
2016	-1.1995227858713824
2017	-1.8071443807654428
2018	-1.8824388411912256
2019	-1.7694840190429513
2020	-1.3130521301742584
2021	-1.7644762262465745
2022	-2.5244630450335444
2023	-2.4220509700732458