Year	annual %
1971	5.97597045631835
1972	8.227631617820322
1973	-13.098942967698463
1974	13.68262589923323
1975	9.618618619938331
1976	8.369551609850518
1977	8.686529116866225
1978	4.041406087067912
1979	12.615862136414407
1980	12.668465525167917
1981	9.110526458719704
1982	7.3783911001142855
1983	3.5105554284791936
1984	4.107122989899636
1985	3.685778325313848
1986	2.4538805489826814
1987	2.8601666931635066
1988	4.123251098891217
1989	4.757027039974233
1990	4.9898769558860465
1991	5.044346819513962
1992	3.0139487589948715
1993	3.033732872686045
1994	2.624661972649008
1995	2.807126629711945
1996	2.7959528334994275
1997	5.951275420371729
1998	2.6810378406034516
1999	2.5121117275931795
2000	-1.1157199256999917
2001	-0.31816394612873466
2002	4.02298127208158
2003	0.9463667930884867
2004	1.9744564123057842
2005	1.9633026109659966
2006	3.4785009440913655
2007	1.5558033100399058
2008	5.468528592827269
2009	-0.48068991533031635
2010	0.958252850910597
2011	7.336288498350612
2012	6.189551505848939
2013	-0.5325019691275941
2014	0.9693339130596428
2015	-3.231618438109791
2016	7.346416007985823
2017	2.1754962986208994
2018	-2.4695545107484236
2019	-4.1962330164981125
2020	6.813409298727294
2021	5.897349436911199
2022	1.066614447196514
2023	6.318247469733819