Year	annual %
1961	1.40206036910517
1962	1.00028038077449
1963	0.860403164147106
1964	0.751693814292362
1965	0.626026482979704
1966	0.473294335607283
1967	0.288361045471149
1968	0.079784686583223
1969	-0.0818053784681996
1970	-0.183041882737634
1971	-0.262505915227199
1972	-0.315104956802249
1973	-0.345722919832326
1974	-0.366401998335513
1975	-0.372895194617841
1976	-0.395987029150586
1977	-0.468127829155229
1978	-0.539191480142496
1979	-0.595647995400127
1980	-0.425084815179625
1981	0.404083471016411
1982	1.36842703604026
1983	1.68766941446961
1984	1.45708991120552
1985	0.957078946145273
1986	0.314688871838137
1987	-0.291823207515822
1988	-0.720288834115063
1989	-0.655950840420111
1990	-0.178543556061915
1991	0.715276810292841
1992	1.2769224986898
1993	1.11509769566787
1994	0.974942832234641
1995	0.855077254089665
1996	0.752495102033127
1997	0.668269318410883
1998	0.614880874124099
1999	0.584915033776679
2000	0.568483013326884
2001	0.468036960036568
2002	0.272937296750141
2003	0.469187987103342
2004	0.711094558594151
2005	0.671613754423162
2006	0.663529251217564
2007	0.661840745939182
2008	0.671715214592327
2009	0.683128733664499
2010	0.69515608509071
2011	0.767833539558842
2012	0.861245196984192
2013	0.887245628443614
2014	0.874356936993021
2015	0.850810358697201
2016	0.825295754248069
2017	0.792907050535382
2018	0.755485367413198
2019	0.724563813014991
2020	0.762219229220411
2021	0.762873605069601
2022	0.662275264266552
2023	0.592162162131326