Year	annual %
1963	-1.971326164874552
1964	-6.2157221206581355
1965	-10.1364522417154
1966	34.924078091106296
1967	20.418006430868168
1968	17.316421895861147
1969	7.738704904973257
1970	32.259427484947715
1971	0.41530229214918934
1972	26.318301121450727
1973	27.452461906560888
1974	55.37002272502717
1975	26.51192368839428
1976	24.756207901879964
1977	5.536081228091382
1978	1.9375405642728973
1979	21.067021216831144
1980	14.332338246894865
1981	29.33290041533071
1982	1.5523174928608041
1983	5.16156278648167
1984	11.799909886966912
1985	22.166443258776425
1986	7.466903802297729
1987	18.52002615879456
1988	2.0320145039328406
1989	13.689188592618754
1990	12.708775233833117
1991	8.04371980052195
2006	15.674635424455005
2007	18.907586641036882
2008	13.74306955142325
2009	15.543257642493993
2010	11.057715483200969
2011	21.624340140896575
2012	16.60874553858252
2013	22.41975350289988
2014	1.4523627579324345
2015	-0.2866965265193895
2016	6.679225185771727
2017	16.659532919697963
2018	10.911091596896313
2019	9.949404351778133