Year	annual % growth
1974	3.55603622354469
1975	-4.39536542527689
1976	45.2326780445101
1977	15.5082559479218
1978	13.1548491357769
1979	9.08611475423132
1980	13.5300838998419
1981	9.39421506456601
1982	-8.74378494593141
1983	-7.15209021321115
1984	9.15368449882456
1985	-5.26695070323244
1986	11.440669406118
1987	16.4771903884613
1988	10.6523666865125
1989	-4.77688048427753
1990	9.83122424878053
1991	7.84205641513837
1992	10.0697301645612
1993	0.537236558542787
1994	24.8350525855698
1995	15.5015161072219
1996	-2.98100864660651
1997	13.9209380532074
1998	-16.4387241474776
1999	-15.0789309011251
2000	19.4931294904711
2001	-4.54502504743616
2002	0.434948417279202
2003	2.69346607684922
2004	2.58556205158354
2005	-0.734381670281778
2006	8.41847623622382
2007	7.98671567635569
2008	-0.309439947488499
2009	1.10504453344478
2010	11.13073790019
2011	2.30433641681064
2012	3.26811429504342
2013	6.11070211747875
2014	1.52478169739452
2015	-7.51980655721404
2016	4.82978739367283
2017	5.20737851970361
2018	1.30740989820018