Year	annual % growth
1971	4.070810873831675
1972	8.711382948048254
1973	9.233842062984124
1974	5.809736671728189
1975	3.213071631010095
1976	3.6501936077559094
1977	0.26384466285549024
1978	7.726176573284562
1979	7.4863367112514965
1980	14.484085170285837
1981	10.359121067788621
1982	-6.800729314352623
1983	-12.42476450205946
1984	2.9911622896505037
1985	5.210342115158866
1986	-10.992327848151675
1987	4.4666612559991705
1988	-2.3155863932246916
1989	6.297905290612121
1990	7.3599125284993505
1991	8.103508543673698
1992	4.677037298528646
1993	-1.0213822642764114
1994	7.713629561457253
1995	-11.337362703269903
1996	6.07662277362337
1997	10.933014870334318
1998	4.746605069105598
1999	5.70988713032186
2000	4.6276593299101165
2001	1.2738321351828432
2002	0.10903860442152791
2003	-2.3029247264119306
2004	3.0573765904863706
2005	-0.7217709332443434
2006	6.767469617443368
2007	1.9592963343185659
2008	-1.1771113847606358
2009	-6.302727108870172
2010	4.775615535543466
2011	2.8909489134086357
2012	2.144813987858413
2013	0.9490458203438976
2014	4.564518739951566
2015	4.749212281580867
2016	1.3618278055511013
2017	2.4822049533552786
2018	1.2135495120251534
2019	1.236373142298902
2020	-11.437328460660126
2021	2.4757059050405985