Year	annual % growth
1971	1.521783966521312
1972	3.697889529944831
1973	6.398578698627986
1974	-5.893310107916591
1975	0.6273100295384353
1976	6.192053466487195
1977	2.270734950551656
1978	3.7698547926602544
1979	1.197870738411936
1980	-3.717887241428784
1981	-2.8717557298564174
1982	2.374263638430591
1983	3.193671674017338
1984	3.5619399022037896
1985	3.9666405025955385
1986	7.182762574322311
1987	0.4629334303576087
1988	-1.313104302151956
1989	-0.3305406617069053
1990	1.1307636905597178
1991	0.4939979509791925
1992	3.0105773950890296
1993	-0.31126509455417306
1994	5.195369702339164
1995	2.926825468060585
1996	2.680945292123994
1997	2.6432379657356506
1998	2.3494114404815036
1999	2.4095727740393897
2000	1.7952040328198962
2001	1.1509634104439215
2002	0.29325780858123096
2003	0.29244558689703126
2004	3.9484555869618845
2005	3.8864097133464384
2006	3.96531189634419
2007	-1.09246629110676
2008	-1.2030925010835745
2009	-4.640154963786628
2010	4.332822873078499
2011	0.34437404173897335
2012	0.46329794669290436
2013	2.795183583538659
2014	3.053512124611089
2015	1.9063917803299688
2016	1.566806788152192
2017	2.04207266192671
2018	1.5581457451253442
2019	0.8273267282939543
2020	-0.8276162519718042
2021	5.933611739107562