Year	annual % growth
1972	-3.4940284419205057
1973	-4.9506076989040935
1974	4.280178739953698
1975	3.8136423543453617
1976	5.943108233080935
1977	0.41865447584139304
1978	7.060800687339366
1979	8.742645134624922
1980	2.453296628728552
1981	6.160809324868936
1982	-11.55146957569913
1983	-19.826842791364356
1984	-2.168359971644321
1985	1.2534707840354145
1986	16.667205396692125
1987	12.875605580524024
1988	1.7202851633236378
1989	1.5793255010931944
1990	-3.8250301467872845
1991	7.3445237271989186
1992	11.72324161057405
1993	4.666314138462056
1994	9.028613941389125
1995	-1.5614421508380047
1996	6.440522719954899
1997	3.595711331145708
1998	5.449359035323781
1999	-2.695114109606152
2000	-3.7002825515135243
2001	-3.5363091435135345
2002	-6.977885980352937
2003	-4.308254355212682
2004	4.775540598643062
2005	7.0376916833280205
2006	3.454934567567051
2007	6.671623052913205
2008	6.210158621850724
2009	3.276349800433053
2010	8.43466264954617
2011	4.587239616239614
2012	-2.5464481736966036
2013	6.788270669659539
2014	0.9647652821915642
2015	0.7550487799189369
2016	13.13563463998382
2017	0.29279983837078305
2018	-0.898067677796945
2019	1.7670903359349666
2020	-7.244448421381534
2021	3.0544627794721606