Year	annual % growth
1971	10.722759662307041
1972	1.2604376919629061
1973	-9.062862356707342
1974	-13.962371591020073
1975	-22.98976229473412
1976	5.938149821375745
1977	11.295740733591657
1978	5.694407011940484
1979	7.480034573996733
1980	4.452000896768382
1981	4.69585335948301
1982	8.017916983580164
1983	-28.842681225501707
1984	-5.563831140978195
1985	-3.253845053270993
1986	7.6522250600788055
1987	9.862089693794744
1988	8.523520537021838
1989	6.796258515239302
1990	3.181972301799533
1991	11.266888602334873
1992	11.6366323302272
1993	5.615330492582601
1994	6.308679580753889
1995	12.610741531175691
1996	5.4902793743935945
1997	6.5672518072768185
1998	4.630876042918814
1999	-2.2444425772421823
2000	2.5370073096966195
2001	2.7887305098329307
2002	2.114815415880031
2003	3.2862828324479807
2004	5.0094324932667575
2005	7.806810116954182
2006	3.2050066871706093
2007	7.222562313320566
2008	0.694146684935987
2009	3.166417147081461
2010	10.117291245498322
2011	1.9618822173719508
2012	9.757282865638444
2013	3.7272772564035392
2014	0.5719988561792917
2015	4.667209080033288
2016	-1.4583029708869901
2017	-0.5419108099175531
2018	-0.8326069424610694
2019	1.0800872228697358
2020	-10.584668425786319
2021	5.176883812864006