Year	annual %
1961	3.839343953162185
1962	3.7312166137398037
1963	3.6445771481480165
1964	3.570940403846137
1965	3.509835294858817
1966	3.5446422421598953
1967	3.542675727735542
1968	3.454330901065333
1969	3.323986875345625
1970	3.132781660385575
1971	2.965473311652559
1972	2.8775051764715442
1973	2.806838151100564
1974	2.7451260712335426
1975	2.5948629242699184
1976	2.4690529335882587
1977	2.4110949944751354
1978	2.376651129523964
1979	2.2649213374763804
1980	2.160450678065388
1981	2.637477802716532
1982	2.766330563917947
1983	2.823641829379568
1984	2.8208729889999944
1985	2.7059139073246428
1986	2.5557664060939373
1987	2.4784571444189822
1988	2.434075122952976
1989	1.9956764273640744
1990	1.7922498126905992
1991	1.464103845998423
1992	1.1968505651326353
1993	1.0016559348428018
1994	0.7376861618001413
1995	0.574893159985308
1996	0.7363837158629565
1997	0.6961456093902001
1998	0.6539784217874995
1999	0.660060810542646
2000	0.7674381778562918
2001	0.8463671831322728
2002	0.9301495654814573
2003	0.9938773818659143
2004	1.0533169242074933
2005	1.08199030917919
2006	1.1058240848619079
2007	0.9752851509905867
2008	1.2711132126704996
2009	1.3607932522675839
2010	1.4675753189962393
2011	1.3938649948890998
2012	1.1840520794234948
2013	1.2255635512239422
2014	1.23004839136172
2015	1.2848181617063545
2016	1.269433003065771
2017	1.2078248124415012
2018	1.2223165728435248
2019	1.2698066849133625
2020	1.0616659427928425
2021	1.0545790968344164
2022	-1.337519353902593
2023	0.5613532304802078