Year	annual % growth
1972	0.13674618666486538
1973	-5.874777776102036
1974	10.975669017387176
1975	11.332214202448384
1976	-7.157708693643315
1977	2.2183508663919014
1978	47.33406978173974
1979	0.7923255044275379
1980	-15.042508968147985
1981	31.042443946130675
1982	32.00512475430594
1983	-0.7374725822309216
1984	6.923969307242572
1985	6.569384983556034
1986	24.307802818720674
1987	-8.922073966649904
1988	-11.867455469209617
1989	-18.179094888910186
1990	-5.4196295556646845
1991	1.9365547146947648
1992	-14.25727848844761
1993	19.161352169906237
1994	-1.014898288229304
1995	0.8954167997204081
1996	1.8004666202273967
1997	9.53336720319487
1998	7.2348208940052245
1999	6.497769700292167
2000	0.9511721303720151
2001	4.268393889306736
2002	3.754637971849874
2003	8.682531642864205
2004	9.528611846154604
2005	1.420611061323001
2006	4.570565848008371
2007	1.8512720714894044
2008	0.9159474822712212
2009	8.486595518107706
2010	1.145392876287417
2011	1.8486854919081566
2012	4.945680719014177
2013	8.743884239032425
2014	7.851348790776797
2015	5.39628506277549
2016	5.476775661199753
2017	3.1579008041674683
2018	4.8352843354625605
2019	4.9817281099732895
2020	4.9708905200493945
2021	-1.0722893378100906