Year	annual % growth
1972	-4.027480495660342
1973	-5.477951608178344
1974	3.667599546244645
1975	3.1500107970835245
1976	5.2414732487674485
1977	-0.21067778108883317
1978	6.456565663636766
1979	8.192077828555782
1980	2.0016523205092795
1981	5.719641217329439
1982	-11.940571832540385
1983	-20.204582310358845
1984	-2.6552002332659015
1985	0.7190155449866609
1986	16.015547314427494
1987	12.226793192699432
1988	1.0932255581550123
1989	0.919298546282505
1990	-4.415067640548287
1991	6.715871405441192
1992	11.072896156525672
1993	4.071826731615147
1994	8.406627444284823
1995	-2.124618826747792
1996	5.835751708493447
1997	3.007159736680066
1998	4.880077554392855
1999	-3.178231345846882
2000	-4.088175523888552
2001	-3.7909885137818833
2002	-7.132677089988974
2003	-4.416977827487216
2004	4.661747654946538
2005	6.913027607640913
2006	3.311162475704151
2007	6.467518877610942
2008	5.972181718191109
2009	3.0283622397757455
2010	8.159909190504976
2011	4.307667212916002
2012	-2.8209609052152302
2013	6.470954893682503
2014	0.6527316332937829
2015	0.42472746264931516
2016	12.772806921845387
2017	0.04562858191681585
2018	-1.0380868419344438
2019	1.726513026608913
2020	-7.262761029586386
2021	3.1394627245477977