Year	annual % growth
1971	3.068920611665149
1972	4.255046448144469
1973	4.921717890434849
1974	-0.08113304957478817
1975	-1.397136882119483
1976	4.274659948701668
1977	2.4558703610682215
1978	3.5509802211366264
1979	2.8415525835350905
1980	-0.5258148550189929
1981	-1.7375262946246863
1982	0.4596256317526155
1983	1.5338892033341978
1984	2.218048168117903
1985	2.361078840991837
1986	5.0777694400585744
1987	2.8647172402508545
1988	4.283913837975291
1989	3.292469832565061
1990	3.2230699352692795
1991	1.6865636620576225
1992	1.1091896981542533
1993	-1.2343763539321913
1994	2.0340146285334697
1995	2.4795954568205474
1996	1.6165104486710788
1997	2.4996707195580115
1998	3.169792779398705
1999	2.7893952305787764
2000	2.1693973145399497
2001	1.6277416987944946
2002	0.27660707736767165
2003	0.26933604127535204
2004	2.080891160009557
2005	0.7772745192696817
2006	2.6038455256630186
2007	2.3065492576632067
2008	-1.7032251451687017
2009	-4.118508063771529
2010	1.5268900722456493
2011	1.2182524655635092
2012	-1.4890076224754552
2013	-0.17006752144278892
2014	1.4313586623684103
2015	2.1624461054430952
2016	2.438909435289787
2017	2.1327318384373655
2018	1.4876093247977167
2019	1.1931343144903224
2020	-7.790864237324456
2021	5.5408144867136