Year	annual % growth
1972	8.774971664022985
1973	-7.306844001140064
1974	1.130047841876447
1975	-7.08062522998722
1976	0.23566540489561305
1977	12.639603150185039
1978	-0.4580876153321327
1979	2.9879238960267855
1980	-3.1538265270844477
1981	-4.833692388471263
1982	-8.747952360752649
1983	1.6320089536174578
1984	1.8346099004031657
1985	-3.6270207362553037
1986	7.73827533581408
1987	0.08154426393893743
1988	1.9150832113239034
1989	-3.5326333201540336
1990	-0.22741267737477244
1991	1.3276863239597816
1992	-3.184867345607529
1993	-1.0369556617809224
1994	6.17938846164509
1995	-0.9942431789213231
1996	3.907045195969445
1997	1.0655027309341563
1998	1.3491598963480982
1999	-0.045250227120234854
2000	-2.8076090299288836
2001	-1.0869360555153378
2002	-2.33967504233631
2003	-2.444490036868217
2004	2.7037218886026864
2005	5.076482437619816
2006	10.992661601684802
2007	1.7877673046732099
2008	-0.8157473716404695
2009	-4.933712462200418
2010	3.1657585163203663
2011	0.42720507848738976
2012	4.721691778432202
2013	0.4998850313649825
2014	1.8231928706083949
2015	6.320183911097217
2016	14.484694339213178
2017	0.8646111543535682
2018	4.729059811102616
2019	4.453036677348592
2020	-2.2129047467101373
2021	7.830734151262945