Year	annual %
1961	3.01980165923581
1962	2.338669315936386
1963	-3.4054139172675804
1964	7.668926369034352
1965	-1.3910209782758756
1966	-0.4372517473454849
1967	-4.781817458446994
1968	6.253882420494577
1969	-1.6547915397514146
1970	3.0006146402174068
1971	-6.6328466478898775
1972	-15.177658756412583
1973	0.7142285987633841
1974	6.883264979538154
1975	-6.338391777768948
1976	3.3376782912375944
1977	0.3634276791275113
1978	4.571541474483794
1979	2.369812015238537
1980	-1.6092860990591902
1981	4.464474801354228
1982	-0.6342625738435004
1983	1.0398448121431159
1984	2.0147013364915267
1985	0.7305904091821276
1986	1.7218512648012734
1987	1.481432355605449
1988	0.22351573502893984
1989	0.674980728998051
1990	3.400369596039468
1991	1.5004707190381623
1992	3.5197285481000335
1993	2.7297061348707103
1994	1.9167072996689285
1995	3.177185503228557
1996	2.706249816740524
1997	2.6384871514969745
1998	3.2221498588485673
1999	2.6847171047829477
2000	3.30590093463195
2001	3.1004366918193256
2002	1.9216894198361985
2003	2.9261345429623162
2004	3.5057432399859323
2005	4.9309682028053885
2006	5.388330721005957
2007	5.939181512012652
2008	5.076730246389133
2009	4.124685812289044
2010	4.373484663835853
2011	5.1745208767040936
2012	5.204991118614672
2013	4.678721918231375
2014	4.747779226504406
2015	5.291060807687671
2016	5.803210397080292
2017	5.266455112830641
2018	6.080237768824219
2019	6.687662726888831
2020	2.2711012940570328
2021	5.716649087224951
2022	5.954844841289145
2023	4.6938743086613925