Year	annual % growth
1981	34.16127136662226
1982	-4.088379837390477
1983	65.97540089624928
1984	-8.122514809240428
1985	-25.442818237212435
1986	-9.045825371067792
1987	61.97342337113088
1988	13.021541529007322
1989	8.312051858962846
1990	-0.5764822219463213
1991	4.5194720885167925
1992	8.719167079369171
1993	-3.512189407464888
1994	0.8486007591194493
1995	-4.510860953839668
1996	-9.406215125144627
1997	1.4940992375096727
1998	2.923462742368031
1999	-29.684528147250504
2000	-15.77289311373498
2001	6.750233323135319
2002	-6.099939945709892
2003	-7.057057602010147
2004	5.810480222081409
2005	-2.6746541817085614
2006	-1.342257528222774
2007	-2.538373270923998
2008	-4.397922340062394
2009	5.013283665890128
2010	0.020593740210046008
2011	-6.698499606068978
2012	-1.2726271240830869
2013	6.235645897905371
2014	3.0990733874346716
2015	5.575975685777678
2016	8.092078368562412
2017	-1.2988182484949533
2018	35.578329231336056
2019	1.0484450534908234
2020	-8.195306689158471
2021	11.431394103213137
2022	-10.755547543615862