Year	annual %
1961	2.447285651872574
1962	2.3888215174695375
1963	2.3330856762695267
1964	2.4845998586530804
1965	2.4243611609992852
1966	1.7804624633506687
1967	1.9418085857101517
1968	1.9048194970694412
1969	1.8692133012152545
1970	1.8349138668196616
1971	-0.7299302481611608
1972	-0.7352974305258806
1973	-0.7407441277861805
1974	-0.74627212015896
1975	-0.751883241402734
1976	0.3766482795476865
1977	0.3752349618550372
1978	0.3738322110607158
1979	0.37243990909824937
1980	1.6041645739169097
1981	0.6926750261781033
1982	0.7221816199964002
1983	0.8637229464843598
1984	0.8775967960557056
1985	0.8383314335591738
1986	0.8470474166436065
1987	0.8105502109496364
1988	0.8571776123500376
1989	0.8430947301073725
1990	0.8208767649651836
1991	-0.5154345699534256
1992	-0.7243944069703662
1993	0.5361486823030238
1994	0.6935661736135267
1995	0.7155725694237021
1996	0.6390011315591385
1997	0.6101522750911677
1998	0.7345224064986179
1999	0.5596113697670897
2000	0.8902087736141645
2001	1.0793352165173118
2002	0.6506369830258227
2003	0.6543271363037482
2004	0.6532113101451512
2005	0.6474133986679035
2006	0.5735306410344375
2007	0.5640957381829794
2008	0.5915767746061529
2009	0.5545851398798671
2010	-0.7831181043635851
2011	-0.8636164958234833
2012	0.36177587733558775
2013	0.31279157082908415
2014	0.21054418830446384
2015	0.15186963609298582
2016	-1.0524709796827185
2017	-1.060534596076184
2018	0.07042749780501968
2019	-0.010952131373941344
2020	-0.02816813263906522
2021	-0.20210414455852657
2022	-0.265391686795242
2023	-0.16681883570215614