Year	annual %
1961	1.9169301048160738
1962	1.9291465429137284
1963	1.8402444144127006
1964	1.7288255919103206
1965	1.8111413483755285
1966	1.8713825379511237
1967	1.895966172587981
1968	1.8773247170807619
1969	1.8404502547780346
1970	1.8288434812746963
1971	1.7840228875031086
1972	1.5197575634377891
1973	1.4521884332126045
1974	1.3993027798818927
1975	1.3777033350813666
1976	1.342725091046123
1977	1.3693531353822013
1978	1.4124710118451793
1979	1.4015755423008152
1980	1.432833650172375
1981	1.4417191273045837
1982	1.3929339131557863
1983	1.321729554729523
1984	1.186856902888567
1985	1.057375736797343
1986	0.8567859708049765
1987	0.644250004031491
1988	0.5198131726831158
1989	0.4141923120953779
1990	0.3403217229266172
1991	0.26725289427498766
1992	0.19860425738713222
1993	0.13009624994714405
1994	0.03853748378334378
1995	0.6872326467496453
1996	0.8073262048415212
1997	0.777461864989499
1998	0.7396707525000412
1999	0.6787391262570104
2000	0.6301426994956031
2001	0.603880259473459
2002	0.5663487023767452
2003	0.5060101969010483
2004	0.5275004685303316
2005	0.1436367209809087
2006	0.025228824175239625
2007	-0.010957118211191948
2008	-0.03108957094566698
2009	-0.04038468835019142
2010	-0.03083299395372622
2011	-0.007462088904828707
2012	-0.009935641414001765
2013	-0.030884573922048346
2014	-0.08119088432142237
2015	-0.14812131037915618
2016	-0.1927381188038169
2017	-0.23674107236231465
2018	-0.32318336265873543
2019	-0.40776283009646125
2020	-0.4113307311718416
2021	-0.42085763604598014
2022	-0.46529924547492263
2023	-0.47914953165273083