Year	annual %
1961	1.0162158598599405
1962	3.5864169827068935
1963	4.806238942846548
1964	7.838829120173088
1965	6.059170182214984
1966	4.938397619623629
1967	3.225638166604014
1968	6.1122410589088645
1969	8.151005293476103
1970	7.933697739366963
1971	6.177547367281619
1972	6.157685655523409
1973	6.870730676782571
1974	6.014297083850067
1975	4.265907388609975
1976	6.246172681147314
1977	4.57286172962003
1978	3.682172556330144
1979	4.575894158729724
1980	4.719242797946691
1981	1.9073994888583172
1982	2.830388166932792
1983	1.6160985136984323
1984	4.644021615802686
1985	4.435681115204559
1986	3.686771043538897
1987	4.658617874769362
1988	4.086719093945916
1989	3.065823104108347
1990	3.1317045042825953
1991	2.818942546570696
1992	4.240782086467036
1993	5.018026746224734
1994	5.120619099769058
1995	4.575979688809099
1996	6.220873741231543
1997	5.6383106026573415
1998	3.2998501777921234
1999	3.6416933648685728
2000	5.531175785928539
2001	3.631331409267574
2002	4.730827900587741
2003	5.864145993626323
2004	7.6597705438961015
2005	7.3156605247693705
2006	8.207421188708963
2007	8.828787134906378
2008	5.91256471731208
2009	3.975476331563982
2010	8.157475984627638
2011	6.382481636026014
2012	5.475671830287567
2013	5.603071470801083
2014	5.157931764263537
2015	4.736742821882316
2016	4.761435286656777
2017	5.339994361135041
2018	4.990183316207592
2019	4.08539765236236
2020	-1.189686677627293
2021	7.424545925627839
2022	3.849025192176427
2023	4.519073208908736