Year	annual % growth
1977	0.30882223307639833
1978	-5.870980235822103
1979	-4.558886889594547
1980	-2.5864450357728686
1981	2.1510313475421157
1982	-10.974414647884288
1983	-3.1117299186818315
1984	-3.168143114959136
1985	2.4780262676557356
1986	-5.798995498169731
1987	2.3453596131502934
1988	-1.3467064397443949
1989	0.3663921517653108
1990	3.1031466074889096
1991	2.8933457960345805
1992	-0.29022742268689683
1993	0.6445185625580052
1994	2.2856993349002153
1995	3.563796340386901
1996	4.184530160750157
1997	3.868544845917782
1998	4.178969075223122
1999	-3.8485457727402235
2000	-2.9000783176109053
2001	1.3945317036839953
2002	1.5127833467103216
2003	0.9897477228427078
2004	1.801365116424165
2005	0.2987173183414171
2006	4.984519997084973
2007	2.5877108004288516
2008	9.3932302272963
2009	0.4411541143753368
2010	4.6251698284705185
2011	2.954476737596366
2012	0.6364863893549852
2013	3.8533821665866412
2014	1.4950696949699136
2015	3.212970584559116
2016	3.770540009020081
2017	2.7595445771921874
2018	2.8012823142727967
2019	1.3211947154058663
2020	-9.262491166151477
2021	-2.0375691477906486