Year	annual %
1961	10.833063900000212
1962	24.521297171784866
1963	-8.652746672207599
1964	9.2713638022407
1965	2.2993738753767587
1966	-7.659065510202112
1967	8.257682647050828
1968	3.7290802210556535
1969	18.767915211832147
1970	-1.7968528752820134
1971	8.955814562744209
1972	25.660715199263322
1973	-10.469854943838058
1974	25.79577285459638
1975	16.351576055523424
1976	12.254446601941751
1977	-1.7995178775541802
1978	9.94259012392304
1979	0.887988823235375
1980	14.50811695323955
1981	7.755343864624308
1982	2.7890866482567276
1983	2.32033993721339
1984	-7.610630211871964
1985	9.350807331789099
1986	-7.952928955436775
1987	1.6822823455100462
1988	18.011140100219492
1989	-13.647282176715109
1990	3.7395559023375142
1991	7.666468187124423
1992	12.972790068566042
1993	6.150895573100755
1994	7.21302920527431
1995	7.02658954303115
1996	9.82556940470964
1997	5.023804508110402
1998	6.78530452433867
1999	-3.553449871090038
2000	0.6756425894105007
2001	1.0472871019198067
2002	3.954831927027442
2003	7.204435052744131
2004	6.902959434892026
2005	6.215077835392819
2006	5.046195555855263
2007	5.674591776858051
2008	4.4766727360801895
2009	5.912042793377054
2010	5.191905840753307
2011	2.850002843579702
2012	-26.339017077253246
2013	-26.300087661506126
2014	-10.310339909052999
2015	-4.179791613231998
2016	-6.405590739361898
2017	-0.7232817774705467
2018	1.3931760783083718
2019	1.2207052207052271
2020	-0.18233046702626154
2021	1.2997380895183142