Year	annual %
1961	4.17201005433125
1962	1.93540094761731
1963	7.96742286280609
1964	3.61266397203855
1965	5.71086183878452
1966	-1.71644716956551
1967	4.90274759747396
1968	-0.504529275700634
1969	9.73154940665937
1970	1.5940719114778
1971	3.66879551176709
1972	-2.6920053758755
1973	-0.0677553552682184
1974	7.95237105664859
1975	-5.23919519371076
1976	-2.27568248795922
1977	4.34095622638597
1978	8.66490384067644
1979	3.64727203746122
1980	4.21648416810352
1981	15.8259316597021
1982	-12.5184405644131
1983	6.57210728205273
1984	12.8455416578066
1985	6.93648403245257
1986	1.30640963295645
1987	-4.62841894493411
1988	-10.3325083587479
1989	21.8809233593883
1990	-14.4669815283542
1991	15.6444247092298
1992	5.59032141745146
1993	2.11500647989497
1994	-4.57594405676505
1995	-7.07789673010852
1996	-0.609063093544734
1997	6.3134851632849
1998	16.1464925148249
1999	-1.54166051671008
2000	-2.08071374438178
2001	1.15806126858107
2002	4.91003237436311
2003	6.70505969758528
2004	2.4020482021152
2005	6.80109609401767
2006	2.9950540443083
2007	-1.4368033739982
2008	3.20374294272794
2009	1.71201616366862
2010	4.99607115910865
2011	3.82032636840593
2012	2.07565361006658
2013	5.80101418256278
2014	5.63067823445013
2015	1.06904075743657
2016	4.55652874234276
2017	1.36892355245438