Year	annual % growth
1971	-0.8170036386982673
1972	-2.456042480708831
1973	5.174616451222079
1974	-9.492080534792038
1975	4.885980577241767
1976	5.688419444678601
1977	3.715168587456219
1978	4.493759405662587
1979	-6.286550076811309
1980	9.214943495265999
1981	-4.812834667842992
1982	-0.3328623903342276
1983	9.082651198548547
1984	-0.5625017584978451
1985	0.5023585556083106
1986	1.8495336899803334
1987	4.439272406867701
1988	6.132683947310326
1989	3.919449362614415
1990	5.4753678567940085
1991	-2.819453151253782
1992	2.0118787389863115
1993	7.754801216026095
1994	3.503578129765998
1995	2.732446753111077
1996	10.350556103130472
1997	1.3711968987503838
1998	4.971484953707389
1999	0.7877047604213345
2000	3.602362926567153
2001	-0.7347226350315594
2002	3.1261662489513498
2003	7.745775916751938
2004	7.178323784077094
2005	6.786473705278937
2006	6.677104122354891
2007	6.636433070871092
2008	1.3043328663350877
2009	8.344390869693811
2010	8.297453449667927
2011	3.3281644661496017
2012	4.68130657674007
2013	4.842502306132118
2014	5.161001565760586
2015	7.789504159781728
2016	6.228041894590902
2017	7.5067635462089015
2018	4.767822708417441
2019	1.7323297767246686
2020	-7.747747028146122
2021	9.592949942942951