Year	annual % growth
1971	1.4064474757503405
1972	-0.2589395331693396
1973	7.569133777473354
1974	-6.415258275639815
1975	5.260855067491661
1976	6.9493232086518475
1977	4.8093931070414015
1978	7.125296474227767
1979	-2.780139794706315
1980	10.269673775446648
1981	-0.6298503957628441
1982	1.3138796756175282
1983	10.20096423649386
1984	1.7923915509904873
1985	3.676047672945913
1986	4.119172486949424
1987	6.458518391436073
1988	7.583157224163585
1989	5.232314776941266
1990	6.795028965624468
1991	0.04289081080661106
1992	4.599897984811221
1993	7.568713210533545
1994	5.275720362910462
1995	4.99554987858231
1996	10.066683300503996
1997	2.7552068528976577
1998	6.484335449186048
1999	2.987170614473442
2000	1.6066966993626153
2001	1.5633697250114125
2002	4.373489746088794
2003	8.470861995343085
2004	8.590815787242192
2005	8.26016860990353
2006	8.037018287213996
2007	7.260170875384304
2008	2.887046951494156
2009	9.532039762370886
2010	8.619199305702125
2011	5.102578046433365
2012	5.1256517448027665
2013	5.891306993739761
2014	6.171909706008336
2015	8.308562302222654
2016	8.62254208525161
2017	7.979209940329852
2018	6.025816120981702
2019	3.635435594979313
2020	-5.060505424450071
2021	9.578066981154109