Year	annual %
1961	2.56276179207958
1962	2.31442930111399
1963	2.04531723492847
1964	1.86253360573772
1965	1.61917347802682
1966	1.52462729190296
1967	1.40008333972427
1968	1.28031286868664
1969	1.19803721256745
1970	1.11841683457871
1971	1.0737122303104
1972	1.06230601231631
1973	1.05113958935479
1974	1.07153610329772
1975	1.06021442843664
1976	1.04905350710902
1977	0.977396032488864
1978	0.937849880348172
1979	0.899282576865745
1980	0.861707082080348
1981	0.883654077171944
1982	0.934031531188196
1983	0.954184562966348
1984	0.973647848218623
1985	0.964294409067733
1986	0.983017147404067
1987	1.02878340600054
1988	0.908693576978877
1989	0.710197400488835
1990	0.461654049432667
1991	0.243535095180549
1992	0.0810579467465175
1993	-0.0270232209761006
1994	-0.243403376968124
1995	-0.485916252801866
1996	-0.200220624729015
1997	-0.369835352113778
1998	-0.0403975726076274
1999	-0.157010551960425
2000	-0.203371722054682
2001	-0.223625637302563
2002	-0.231580062051396
2003	-0.281602495320467
2004	-0.247447154059097
2005	-0.243318711825946
2006	-0.277922768195992
2007	-0.231718324871942
2008	-0.190349156188775
2009	-0.12626339171085
2010	-0.0998329740168972
2011	-0.0578362648793712
2012	-0.0131095435392298
2013	-0.0267837694756349
2014	-0.0609720602101012
2015	-0.767049559673864
2016	-1.16302237797705
2017	-1.72705846625605
2018	-1.75700442074845
2019	-1.60031653578231
2020	-1.09803165876287
2021	-1.50342952349937
2022	-2.21696682736653
2023	-2.06952171753803