Year	annual %
1961	0.503387480698682
1962	0.904284443540121
1963	1.50851383539107
1964	1.43339916603503
1965	1.11820855898455
1966	0.761578756681416
1967	0.357150920745933
1968	0.855400622366689
1969	1.66403028759831
1970	1.64091333717161
1971	1.39118446644545
1972	1.12730743916053
1973	0.85215854436847
1974	0.635376611352909
1975	1.0317895654317
1976	1.45465596405477
1977	1.31954350368758
1978	1.17815549713255
1979	1.05270045134303
1980	0.897798647808138
1981	0.765272314611162
1982	1.05365832516093
1983	1.48316192992406
1984	1.49669413261499
1985	1.39828194947668
1986	1.25566519241492
1987	1.12151982573854
1988	1.01852420074943
1989	0.921850215615285
1990	0.831034299140832
1991	0.771849528449064
1992	0.749702002240685
1993	0.744123269256896
1994	0.735427307440948
1995	0.73005823579243
1996	0.749991648586953
1997	0.781953204764374
1998	0.751051413609378
1999	0.572730386196825
2000	0.218936549624527
2001	-0.0647059752351783
2002	-0.178929555681925
2003	-0.216376703381685
2004	-0.24786231551975
2005	-0.295136676013591
2006	-0.405287997089734
2007	-0.589029493886293
2008	0.122477835833443
2009	1.6775209368822
2010	2.36977191505581
2011	2.28545620835272
2012	2.19981191992032
2013	2.06780986239305
2014	1.91520497126224
2015	1.78404621981199
2016	0.842469530267675
2017	-0.0728597482140499
2018	-0.0405005878121066
2019	0.0135020185722688
2020	-0.302883026724653
2021	-0.641236845621864
2022	-0.593262624459316
2023	-0.472749142011553