Year	annual %
1961	0.5322910590223652
1962	0.5572621959083133
1963	0.5677697913338383
1964	0.5608576450259734
1965	0.5531759671909359
1966	0.5244667069533868
1967	0.49146915356146914
1968	0.4548830589457821
1969	0.4228263982247739
1970	0.37230148630253584
1971	0.3312070699726861
1972	0.2934647696519264
1973	0.276010811732716
1974	0.7951496174174167
1975	1.362908496847723
1976	1.5794133793403005
1977	1.8437555163593182
1978	1.9653723103363354
1979	1.9735318948937601
1980	1.8909255280694208
1981	1.850496474323694
1982	1.8020575410122384
1983	1.6573588757015547
1984	1.384880823424402
1985	1.8007581039378797
1986	2.007113172056369
1987	1.4595449032670784
1988	0.9808161567313565
1989	0.5661895138724199
1990	0.16181193592517268
1991	-0.22454560245575247
1992	-0.6212670121643379
1993	-1.0967588776988517
1994	0.6903590161725764
1995	1.8783359422555874
1996	1.7720668042694114
1997	1.6699751283139435
1998	1.579218280153741
1999	1.5021712078665979
2000	1.4298392181441835
2001	1.3587789188483228
2002	1.284321077418198
2003	1.2258954960170572
2004	0.39817445777187954
2005	-0.1954317388272652
2006	-0.28461956601839006
2007	-0.34919758470545686
2008	-0.3865060481591219
2009	-0.3818699037775967
2010	4.4727192539742955
2011	6.482450824286391
2012	3.7849816384580457
2013	1.5961580679636405
2014	-1.2441750809542806
2015	-1.8093972808422571
2016	-1.5604005592521417
2017	-3.031340501187017
2018	-4.842427831738294
2019	-5.989874898619656
2020	-7.190852309586063
2021	-6.264659611691674
2022	-4.37576186017767
2023	-3.9752502039421627