Year	annual % growth
1971	2.0431351203487083
1972	4.266582103459555
1973	4.573004019729126
1974	-3.1503042760308233
1975	-0.6768047950241822
1976	3.6665155410230597
1977	2.294171865188815
1978	3.856798878874244
1979	0.6604341793301671
1980	-1.3951778097163015
1981	1.0787158911846007
1982	0.1178578102900758
1983	1.3704728692071058
1984	4.307382503880561
1985	3.0702454586297705
1986	3.25657972964639
1987	2.8994971898086845
1988	4.503810185165463
1989	2.3037576484356634
1990	1.7473865008164893
1991	0.5348414436671618
1992	1.2464509257884941
1993	0.054064118472624045
1994	3.0465771501547465
1995	2.035343363169062
1996	2.471917628591825
1997	3.221650482681909
1998	2.857110613740616
1999	2.4171524798963304
2000	2.7722134101900906
2001	0.8877990775863367
2002	0.5505316726681002
2003	0.9775286348593539
2004	2.569064673984073
2005	1.587914730119948
2006	2.420833336402751
2007	0.9097834797427282
2008	-2.817334140483453
2009	-3.2865753389183254
2010	3.2550670578910257
2011	0.9445719616852983
2012	1.1560824738268138
2013	0.8048135961629299
2014	1.998716978358388
2015	2.5493239273525177
2016	1.0617279758988474
2017	2.0064589097432446
2018	1.3901069855392052
2019	1.1088370857750078
2020	-5.587693705604721
2021	4.651057350026804