Year	annual %
1961	0.6793073425426022
1962	0.2725377938807121
1963	0.19369169717081847
1964	0.056619354321902446
1965	-0.0026205588081060394
1966	0.013626155951463728
1967	-0.018081263536502912
1968	-0.09753796100902533
1969	-0.1714462418891406
1970	-0.24863297629819045
1971	-0.3234891064280802
1972	-0.39986812631724444
1973	-1.170890120080544
1974	-4.3363592524536125
1975	-4.772337814126184
1976	-3.831891025072226
1977	-3.4698427458991903
1978	-3.6962904363383626
1979	-3.9053971758949992
1980	-4.119610734025849
1981	-4.301468811935276
1982	-4.346200780900806
1983	-0.7411391518781765
1984	0.5140097166962762
1985	0.45297028438763315
1986	0.39004772497730966
1987	0.3282356544570766
1988	0.2689416414351723
1989	0.21891561359034975
1990	0.15165843474488933
1991	0.08279930799524922
1992	0.15549257683351844
1993	1.3007390702125434
1994	1.8273273990241496
1995	1.7220039622363756
1996	1.639333786122267
1997	1.5753096840989498
1998	1.511783592455194
1999	1.4480086869914417
2000	1.3849665822130788
2001	1.3481278050985332
2002	2.0236822610087586
2003	2.280885805765989
2004	2.2698033766870878
2005	2.236747149151112
2006	2.205943076322249
2007	2.1792722546677306
2008	2.1552800234655893
2009	2.1334923538127426
2010	2.1151156811945366
2011	1.7997217312388718
2012	1.4406918388202121
2013	1.2743137699743006
2014	1.1773929859092644
2015	1.1277693659225234
2016	1.0852014199291815
2017	1.0204208559490124
2018	0.927582474205914
2019	0.8325565481022413
2020	0.6572910627552095
2021	0.43063290749650734
2022	0.41888602882569836
2023	0.45873297858266177