Year	annual % growth
1971	6.396391554917827
1972	8.650173287529057
1973	9.196576214275225
1974	2.1528445252541104
1975	2.4761604281865033
1976	9.846970641384289
1977	8.962787258596677
1978	8.66377427826464
1979	2.4163822959444303
1980	5.275305706290624
1981	-0.17587341372914977
1982	0.9787089654203669
1983	-0.7992773747918562
1984	2.4094264280178948
1985	0.9426854481443598
1986	10.325502248056978
1987	-1.2287924888195931
1988	5.85372521517013
1989	-0.013058503397516574
1990	1.4702325092109731
1991	4.6906728407643925
1992	5.703020757487451
1993	6.991381662810241
1994	12.43923692865259
1995	4.373377782900633
1996	0.39898542763529576
1997	4.041974991473424
1998	-0.6475637317715695
1999	-6.668041173183781
2000	-0.2429519411157628
2001	2.181792917143909
2002	2.0873281579525553
2003	2.5217407135142054
2004	5.6244580778141255
2005	5.375210502250809
2006	6.27930823583344
2007	8.768308940318661
2008	4.1093001970592695
2009	4.347556400640457
2010	4.767733687717012
2011	4.836209133132073
2012	6.0797337611383
2013	6.5799907165639695
2014	5.336498437839367
2015	4.253540980328168
2016	2.578669538858165
2017	1.5846358403228038
2018	1.9038361809966062
2019	3.8234049742198266
2020	-5.347295439982602
2021	7.652827833196213