Year	annual % growth
1981	1.1499023223116183
1982	5.230064419239795
1983	-2.997218011637969
1984	-4.048070099340549
1985	-1.7021784957503883
1986	6.715945375284946
1987	-3.352295012708467
1988	3.1476316398060504
1989	-2.311855364044817
1990	-2.3392294174777817
1991	4.613606520432057
1992	-2.0616600686354474
1993	0.3388041058975091
1994	-9.51622346109697
1995	5.394564512586712
1996	7.935891530063728
1997	2.2593974038676663
1998	5.934580663676755
1999	0.2506585172526741
2000	0.7539504570761295
2001	3.344291711686381
2002	1.0141282594139227
2003	4.249533056465651
2004	1.4409032420741994
2005	3.9350120438367213
2006	2.405846027540079
2007	0.7280218838658215
2008	1.9015366477679265
2009	-0.6687137973965207
2010	5.036255520429407
2011	2.9690489466268843
2012	9.024406309980833
2013	0.27878308340758906
2014	0.19128932982765434
2015	2.4731890306922537
2016	5.320655375643483
2017	3.4181783099846825
2018	4.825541879728263
2019	4.284296314029575
2020	-1.8945412716083752
2021	-7.895951036581863