Year	annual % growth
1981	4.230570369355348
1982	-1.169145624309337
1983	0.4781768680443861
1984	-0.4719218920206174
1985	1.423771574470706
1986	9.985806906633641
1987	3.732396765306305
1988	-0.9419405506115197
1989	7.919818159642205
1990	-2.6527043899533282
1991	3.276999307116185
1992	-12.826953520767177
1993	6.700682533394513
1994	-0.14651837162105608
1995	17.43673912819945
1996	4.260377907234641
1997	-3.9268062092673404
1998	10.045066699808132
1999	4.480614935296671
2000	-4.53660226640109
2001	-5.559486214590635
2002	9.491697760197269
2003	12.906152239288147
2004	1.3629083604019883
2005	8.074055820759753
2006	6.345024814631813
2007	-1.7232452672617882
2008	1.252272957698338
2009	10.545274043453006
2010	7.318904196630612
2011	14.653850380278243
2012	-0.4416908416023091
2013	5.768967755231586
2014	-10.0096665150556
2015	4.267590040287956
2016	12.048975141693518
2017	5.064335734214765
2018	17.672913593715094
2019	10.509574944245827
2020	6.567017851506549
2021	-2.868883689957883