Year	annual % growth
1971	1.4064474757503405
1972	-0.2589395331693396
1973	7.569133777473354
1974	-7.424974839181019
1975	7.260283176968713
1976	8.049108533251271
1977	6.03111026903224
1978	6.83191407312998
1979	-4.1794604836893825
1980	11.71266544301281
1981	-2.621636561282287
1982	1.9460842436063217
1983	11.574525217346704
1984	1.7131746517379867
1985	2.7876098958256534
1986	4.151781920649512
1987	6.774083956299322
1988	8.476424603062554
1989	6.198315648221779
1990	7.758094702797649
1991	-0.7552058133318127
1992	4.150056185726996
1993	9.984193548093572
1994	5.616514209887896
1995	4.7992606036186345
1996	12.525124674832071
1997	3.335566772601851
1998	6.971700701152145
1999	2.6689469005741557
2000	5.507493386984592
2001	1.0767672630700247
2002	4.974853648491347
2003	9.619712389436359
2004	8.986294237896544
2005	8.51327974980245
2006	8.31564821505826
2007	8.211640573963479
2008	2.755573791141643
2009	9.86220594593064
2010	9.799678167619149
2011	4.744690179818406
2012	6.085193090190728
2013	6.211749085767508
2014	6.473501913013877
2015	9.077456823817329
2016	7.494381836466445
2017	8.756344359407976
2018	5.91341987610339
2019	2.7807680025877914
2020	-6.862312068899826
2021	10.470134459927948