Year	annual %
1961	-0.8413610979772841
1962	0.4034553534052492
1963	1.5279469951103692
1964	1.411907345980552
1965	2.0939590251517473
1966	2.306618166864709
1967	2.1253905533773434
1968	2.129169599508458
1969	2.2038031500287474
1970	2.2152824114340746
1971	2.225688872112542
1972	2.0217017569981124
1973	1.7983872919054704
1974	1.539149883341878
1975	1.3240561715524706
1976	1.2297827724774208
1977	1.0882085485683035
1978	0.7553323499826377
1979	0.44659546703459796
1980	0.3939827155943192
1981	0.4095929429112317
1982	0.5202540223104393
1983	0.6236404914984064
1984	0.5053463229660338
1985	0.5204606872728021
1986	0.5897452286196483
1987	0.6482768358660138
1988	0.6177489282285222
1989	0.549561838506321
1990	0.49339524723592376
1991	0.26565389637416104
1992	0.11224391908295672
1993	0.020141461380944747
1994	-0.045331029886710894
1995	-0.12179381432268599
1996	-0.19116733996770563
1997	-0.25871140054391617
1998	-0.3483354866817905
1999	-0.4656163069719099
2000	-0.6125865622767179
2001	-0.9049848043138695
2002	-1.1088202621431549
2003	-1.1931874210804523
2004	-1.2691445518246809
2005	-1.3285886275701841
2006	-1.3466875691244837
2007	-1.3900345005463635
2008	-1.437197056754286
2009	-1.4842199525648425
2010	-1.5633467920128652
2011	-1.4410186486174297
2012	-1.3353223979081719
2013	-1.3767401075525356
2014	-1.4487717878344455
2015	-1.5374714609135651
2016	-1.5972370496857167
2017	-1.616722180900183
2018	-1.711580281732111
2019	-1.7931048271730674
2020	-1.8861408939503121
2021	-1.980673371567832
2022	-2.110773764507613
2023	-2.133336922346956