Year	annual %
1966	-0.5377376915717633
1967	7.043431940951123
1968	1.3689709826671788
1969	0.3106156958951374
1970	-1.1971862549161187
1971	-0.4156589954692862
1972	0.457765381167178
1973	-1.079180906868217
1974	5.981627214506034
1975	-0.13583200340232793
1976	6.634047959870287
1977	-2.8794058804508182
1978	3.308139792178963
1979	1.2975722270549142
1980	-1.532903770186607
1981	1.0763263175409747
1982	6.565464021958277
1983	-2.4934016881267382
1984	-4.263063444610353
1985	5.4160955049906505
1986	5.0551375838097385
1987	-3.0331520478493417
1988	2.8592862480132624
1989	-0.4511728105530608
1990	-2.9536820383370923
1991	6.289503385424993
1992	-2.2702757768429365
1993	0.6856607679935252
1994	-1.3236751578142787
1995	3.3641033683992987
1996	8.93855712850744
1997	3.2691080713612735
1998	4.386057723286868
1999	4.513265214549932
2000	-1.3296934222112924
2001	3.1763132063692154
2002	0.6486753639604075
2003	4.305014974221933
2004	1.5532691689232365
2005	5.0938512800425
2006	3.725242332725756
2007	0.9920524278996652
2008	2.641486762178971
2009	-0.8230142585545366
2010	3.4482783775747805
2011	2.2858382615602295
2012	4.8567408735580955
2013	2.548594811715347
2014	-0.4280885984030931
2015	0.6189404088806469
2016	2.909505810077036
2017	3.9632349882914326
2018	4.336489950121219
2019	1.5455910334402319
2020	0.24401418798092323
2021	2.8598495881640957