Year	annual % growth
1971	9.51642668056924
1972	2.9532835720217747
1973	7.533440806861051
1974	-11.647493430726612
1975	-10.032591889802518
1976	1.601330707331286
1977	-18.26953248699084
1978	28.952845597287933
1979	-12.644082216626344
1980	18.06453060843161
1981	-0.3072851921339179
1982	2.6371137284673125
1983	-4.909558379097433
1984	5.619207333557185
1985	-7.065305530736751
1986	29.497797846217225
1987	16.15573207666003
1988	14.925166911207171
1989	7.8226712311344215
1990	5.248840640966492
1991	14.867699474818494
1992	-12.664745381829675
1993	9.574910459682613
1994	0.24774545624701716
1995	-4.966559294409251
1996	0.32239095169430243
1997	14.904387418984726
1998	8.215238261278841
1999	18.099622535458536
2000	3.1329310269151875
2001	-0.8737697506084601
2002	-4.935039251404206
2003	7.838031986668412
2004	5.393314304000512
2005	5.0262864988150255
2006	-2.269590329196788
2007	11.135629798663047
2008	10.153392659063016
2009	-23.62538236391778
2010	21.201308664513846
2011	9.556681946025634
2012	-0.49965660627913167
2013	1.0178828081269842
2014	9.992488338223467
2015	0.8767463405923337
2016	-2.629786115548441
2017	7.425000938004175
2018	-8.044295812336088
2019	11.61000997464609
2020	-6.449134844598007
2021	16.423471062098088
2022	-9.757450623579373
2023	-0.7614521123532825