Year	annual % growth
1971	3.63594328295885
1972	6.32509222794346
1973	6.85236087750883
1974	3.41710353191537
1975	3.96512079883922
1976	1.20010501486179
1977	1.47596261181664
1978	1.8500942305468
1979	1.80207370889688
1980	3.64002308296413
1981	4.82608149554756
1982	2.11112542138893
1983	0.741321937206635
1984	4.33922784123016
1985	1.98779089966771
1986	2.75722214724416
1987	1.91245113090275
1988	7.21850231305199
1989	4.91491327445392
1990	1.4339984655833
1991	-0.352797301421973
1992	0.167397513305545
1993	4.68035734601087
1994	4.25435294845431
1995	3.38649183436009
1996	4.95426563686192
1997	4.64191408083127
1998	4.61010492052556
1999	4.07558330184028
2000	3.34441145058963
2001	3.47389670009726
2002	4.51717215987921
2003	3.46026001690987
2004	5.17695132824403
2005	2.37149212325565
2006	3.51682518521224
2007	3.9811033816393
2008	5.02782889055541
2009	6.07195239686646
2010	1.40649449186792
2011	5.93619299889005
2012	5.56328955551326
2013	0.332635893023919
2014	1.05173195695798
2015	0.297923107447986
2016	0.35043702666178
2017	4.52818439399931