Year	annual % growth
1971	7.66920818675294
1972	17.078645110712472
1973	9.996442384004212
1974	-2.146534407882754
1975	-7.2107905329819175
1976	9.023351972320341
1977	-4.897433685230766
1978	-18.86600304807172
1979	-11.139350677118287
1980	-40.30785483467773
1981	0.45663139595750124
1982	29.609818423514525
1983	12.894420640371067
1984	-7.271935713987929
1985	-2.0378607342480137
1986	-6.264838644730915
1987	19.19928773041157
1988	10.390273468726605
1989	8.079162011745495
1990	13.283753894829474
1991	10.020654015550278
1992	3.7216225573409645
1993	5.5874448260876335
1994	7.0457546046182955
1995	-0.26683122359435174
1996	3.017683370962729
1997	2.0282487839161263
1998	0.2917059392161292
1999	5.450627555146511
2000	5.284536069504014
2001	2.234604610893399
2002	3.7979104856242287
2003	6.112137837405513
2004	6.849641890440083
2005	6.993806850514446
2006	7.298118502705435
2007	4.26262696390522
2008	4.803090696158009
2009	-7.612176183499386
2010	14.851995264033931
2011	-11.201362106396331
2012	-0.8138808068243435
2013	-3.758361389263854
2014	-1.8961128374810556
2015	5.1700823936658935
2016	4.85841625281634
2017	16.123572875918768
2018	8.774783191058162
2019	-4.536148733796608
2020	-20.456888893179695
2021	3.1131103483568836
2022	16.72330464271016
2023	16.566449395523193