Year	annual %
1961	3.7409028140110934
1962	-2.4543330322291013
1963	-6.831393314861373
1964	8.382751476704328
1965	8.838850212103594
1966	-2.2092854101143047
1967	1.5872412182659161
1968	3.2081560501284088
1969	8.001733125956505
1970	1.443199663462309
1971	3.998125312439214
1972	0.02048733238726186
1973	1.1360933215490547
1974	3.754159661395562
1975	-1.6735283950232116
1976	-3.5638025213075935
1977	5.238802842399593
1978	-6.0270020388376935
1979	8.472518076679279
1980	-0.07752275756799065
1981	-6.676587245642025
1982	-2.2851504148082284
1983	2.7351300377588075
1984	0.02137978756893233
1985	-6.61309327708733
1986	4.561114002692406
1987	1.164689931348974
1988	-2.5703918325237254
1989	-8.527911410600893
1990	-3.877389883057262
1991	7.589999663851188
1992	6.450073130906105
1993	6.747497372254017
1994	4.420120784864352
1995	-4.116880800617139
1996	4.204967318584266
1997	6.823321092393414
1998	2.6543475973445823
1999	-4.492112128935986
2000	-1.9069874983516684
2001	-5.45379697848054
2002	-11.845950393822704
2003	7.719229636637209
2004	7.928157050804188
2005	7.732496998516908
2006	6.934981737644492
2007	7.916210571644584
2008	3.0297854066404284
2009	-6.867955225069807
2010	9.84429639847724
2011	4.788683138594351
2012	-2.1452844498181207
2013	1.2656851753707627
2014	-3.5785805098328893
2015	1.6296642794626308
2016	-3.110063898214648
2017	1.7576481826569363
2018	-3.6016097565715484
2019	-2.969562498662185
2020	-10.7702732277494
2021	9.67392093465429
2022	3.989131084505175
2023	-2.4362511141416974