Year	annual % growth
1971	5.609702402435673
1972	9.460458189558935
1973	8.068542915737126
1974	2.431213233608972
1975	0.7533862662077411
1976	3.280319661556973
1977	2.9787909279739466
1978	3.06081708916237
1979	0.19476245735884845
1980	-1.0753675575641495
1981	-2.9581755638082257
1982	0.9455930594024977
1983	0.5624775684761119
1984	2.510575464865326
1985	3.77160453127901
1986	6.488252246194023
1987	6.249484765755483
1988	5.190938943049048
1989	5.80627465990429
1990	4.763222976223872
1991	3.4860920532126016
1992	1.4288339502834333
1993	-1.2613780147492548
1994	0.5336298841094305
1995	4.6216423988563236
1996	2.3451465042144832
1997	3.803768542046356
1998	5.317557429421143
1999	4.447389522913284
2000	4.021165111479164
2001	3.7520702666544565
2002	3.771027610628906
2003	3.5567308636629917
2004	2.6143265489015732
2005	3.0576214097979744
2006	3.4803812292809795
2007	3.1394825874010195
2008	-0.19466195692305632
2009	-2.0385064263978734
2010	-0.4312393133673851
2011	-2.5372712311214087
2012	-2.5813962447435443
2013	-0.7939968934602604
2014	1.44557170127932
2015	4.785559795419303
2016	3.6345041767484645
2017	2.8056374949368035
2018	2.3056619172377566
2019	1.9511322661770407
2020	-12.943013406418586
2021	5.768289453426917