Year	annual %
1961	2.02259973279057
1962	2.17556040717112
1963	2.25833856168216
1964	2.37335843320943
1965	2.3467386018567
1966	2.3391785122375
1967	1.64186215165934
1968	0.788368905854224
1969	0.719492266502827
1970	1.83800956713655
1971	3.23753715250208
1972	3.61364176347744
1973	2.98650448071879
1974	0.960210528002221
1975	-0.435316687280262
1976	-0.540842804073148
1977	-0.607953236416106
1978	-0.611671927217687
1979	-0.704827319369108
1980	-0.3910073407843
1981	1.08776135453403
1982	2.23544355783694
1983	2.39490364946368
1984	2.48185698421507
1985	2.56110201253732
1986	2.46854620975237
1987	2.29033832706748
1988	2.23222011639668
1989	2.1968506588625
1990	2.22157896887967
1991	2.24365277511788
1992	2.30069558778237
1993	2.32223874299347
1994	2.35304974101942
1995	2.58409269476565
1996	2.99384141000332
1997	3.1366195099622
1998	2.98818970790555
1999	2.76225974011357
2000	1.76959560691815
2001	0.515751762652575
2002	0.115930353970459
2003	0.145981753039584
2004	0.135722744336851
2005	-0.382505876810364
2006	-1.0747885465001
2007	-1.29795332493524
2008	-1.37259095767935
2009	-1.45541484875174
2010	-1.53083329873194
2011	-1.63135754915238
2012	-1.62497357703192
2013	-0.788793214612497
2014	-0.0505603785945698
2015	-0.0112391121219639
2016	0.123560813249084
2017	0.117802162109984
2018	0.151256296169056
2019	0.290665380719677
2020	0.312082286285984
2021	0.288921192202971
2022	0.171845159947773
2023	0.0166145155866348