Year	annual % growth
1971	1.3754126751243376
1972	4.314761127680185
1973	4.4623150302394095
1974	-5.228776161102573
1975	-1.3308589032527323
1976	4.036471095434081
1977	2.9925334928947223
1978	4.028403411639189
1979	-1.731031534192013
1980	-3.1900372903430423
1981	3.2726018809965893
1982	0.2149356254028021
1983	2.26222640290527
1984	7.165499850535653
1985	3.2499080453906544
1986	2.5520401494875387
1987	2.6993838576974127
1988	4.82799616210248
1989	1.3554271562713893
1990	0.18830677126362616
1991	-1.0048540280941438
1992	2.0423511090520634
1993	0.9388710801161437
1994	3.1935248398645513
1995	2.127918807570822
1996	3.133881806963416
1997	4.156732263451218
1998	4.685303278789547
1999	2.9772347566804314
2000	2.671665912097538
2001	0.5223213043624924
2002	0.5355760866802228
2003	1.050500284267116
2004	2.888110305807629
2005	1.8100728858192099
2006	2.765343525961498
2007	-0.6292350373647793
2008	-3.599469550380789
2009	-1.9379863369312602
2010	3.4515547982670682
2011	1.310037503036071
2012	3.091498034173327
2013	0.710790282760513
2014	2.594353056665483
2015	2.782918225911615
2016	0.32878478896769536
2017	2.0598553574453433
2018	2.3690315069829495
2019	1.797946210855116
2020	-4.36232329360638
2021	5.061147465520463