Year	annual %
1961	3.737784426130749
1962	3.6521427079358
1963	3.60231566393763
1964	3.55924887629835
1965	2.7523984879981236
1966	1.56276129349337
1967	1.4123465743812162
1968	1.3104551371837045
1969	1.2458937267630208
1970	1.1475170482050312
1971	2.191268175254076
1972	3.5896309670965354
1973	3.8683742079499055
1974	3.767885847030895
1975	3.6707475374021907
1976	3.5542788359186077
1977	3.4170350918054573
1978	3.264092404157864
1979	3.0935114115292093
1980	2.9193569425373243
1981	2.444237281628529
1982	1.959606373842069
1983	1.8790933882594694
1984	1.924893108581689
1985	1.9674308618359768
1986	1.992737593223279
1987	1.9779201509072222
1988	1.9344876735212366
1989	1.85466374375428
1990	1.7573584599134255
1991	1.8118602457137436
1992	2.9051547114912877
1993	3.4438223020884973
1994	3.3683757925501143
1995	3.297951681904209
1996	3.2089793505613655
1997	3.1197488531281596
1998	3.0202395655074628
1999	2.906833164525302
2000	2.78483494532361
2001	2.636408973247576
2002	2.4102036738788275
2003	3.835481229921496
2004	6.714476136153737
2005	7.695989197567629
2006	7.119046012660989
2007	6.6056823203694615
2008	6.1279497150892555
2009	5.610088768459008
2010	2.375335410071415
2011	-0.6677165420809941
2012	0.46162217373539594
2013	2.302947122544687
2014	3.1259860851509296
2015	3.0559175653908492
2016	2.5985924206657454
2017	2.407804477606225
2018	1.1341918661369836
2019	-0.5443466037723106
2020	-2.186869492272039
2021	-2.0775973410705775
2022	-0.5619680317001756
2023	-0.33830429209000573