Year	annual %
1961	3.47752266190338
1962	3.38192771616975
1963	3.22286696180489
1964	3.03434108670383
1965	2.86152806861736
1966	2.71324127731717
1967	2.60150502780077
1968	2.53400806848163
1969	2.44852631057985
1970	2.31585112360355
1971	2.20663354123492
1972	2.18085819158122
1973	2.19635712690291
1974	2.22108033356489
1975	2.25615113018161
1976	2.28792075552091
1977	2.3615549865221
1978	2.42197260487385
1979	1.91794944424486
1980	1.22157791481934
1981	1.03929240069991
1982	1.07177181495337
1983	1.1266671586127
1984	1.03868703410927
1985	0.876135492163535
1986	0.793175270723346
1987	0.724172766962345
1988	0.460659782606686
1989	2.38742706887441
1990	3.09395853064584
1991	1.70315107535054
1992	-1.1978698848239
1993	-3.33385824449579
1994	-2.44881921637014
1995	-1.52115344151014
1996	-0.721391054169414
1997	-0.836494324970795
1998	-0.948046157437858
1999	-1.07096568858801
2000	-1.17678628879226
2001	-1.12320863167984
2002	-0.900783081509756
2003	-0.676510249442033
2004	-0.596992234773189
2005	-0.605237484238947
2006	-0.683602136047238
2007	-0.732665962263764
2008	-0.700492224911231
2009	-0.6431061166878
2010	-0.609179750926293
2011	-0.589489609644367
2012	-0.498170160314836
2013	-0.44829630947071
2014	-0.395592881362063
2015	-0.392995248824912
2016	-0.444257166904663
2017	-0.486625263030829
2018	-0.54025108197947
2019	-0.564065542556681
2020	-0.533006606500067
2021	-0.522963242641951
2022	-0.377102034390101
2023	-0.0899173371650819