Year	annual % growth
1971	8.78777683260094
1972	5.840007216665796
1973	10.046466028655644
1974	8.525323154088
1975	3.998550475224576
1976	7.919671385421083
1977	10.4938479484655
1978	9.329724143473214
1979	3.1186868668175833
1980	25.801731798654387
1981	16.611681294650467
1982	7.077276315798954
1983	226.582992998308
1984	46.57045873581046
1985	40.864749424946325
1986	-3.574659768572559
1987	-15.931470029838295
1988	-60.55117460879979
1989	13.526755815614294
1990	58.177199524768355
1991	-20.07914432587205
1992	13.561570809343877
1993	40.75515997414249
1994	29.902699844950718
1995	5.352716108955775
1996	-40.64188104135147
1997	-11.269113626528679
1998	-93.04040740518427
1999	-368.0537924626641
2000	177.94508463265123
2001	31.391901612476516
2002	-129.35891406817848
2003	-450.90674098562664
2004	-88.26684665344494
2005	234.73908992344025
2006	-51.53953760088628
2007	-653.5264128903278
2008	-1.480098619760355
2009	23.995196023466335
2010	2.348766160300812
2011	5.18171333296398
2012	5.537193810982103
2013	5.714346850651069
2014	3.8790619457686972
2015	6.519563254994566
2016	7.237686894706613
2017	3.8686647124657156
2018	3.691790265878538
2019	3.0141768638087996
2020	-2.7405352565493075
2021	5.366874211762408