Year	annual % growth
1961	0.9502548311807004
1962	3.1163102088446806
1963	3.0221293130709057
1964	9.874470646664648
1965	7.496335714754892
1966	3.5294118571314215
1967	3.288317888996943
1968	6.356629261750555
1969	5.2024645067098305
1970	7.959641411659973
1971	1.5422483212157658
1972	6.423754880066014
1973	6.616129460607922
1974	-12.618922166926467
1975	34.70935375178502
1976	15.697318156117518
1977	12.108103171814832
1978	8.34137579081515
1979	0.6230518181934457
1980	9.199466921948456
1981	4.65775443563021
1982	3.250778189946061
1983	-2.173919447252601
1984	-1.7904166418274912
1985	0.24616978398435663
1986	2.9623518538169975
1987	3.9913820217893203
1988	5.045978247438981
1989	-5.958209268958825
1990	2.8687273735579453
1991	7.97632221715152
1992	8.319559032082395
1993	0.10336205161729595
1994	-4.451878314547386
1995	0.9425398628220165
1996	-4.405169224590281
1997	2.687811101765476
1998	1.8372634060733333
1999	-1.7053307638000064
2000	4.684664694109102
2001	5.989513977646382
2002	-7.107746881136322
2003	-4.26280351219674
2004	15.447685389455756
2005	15.712624993015112
2006	15.457345023263102
2007	16.886064303133153
2008	6.316750816260736
2009	-2.923523460833792
2010	-1.8680750138659619
2011	4.023863063721393
2012	7.0238118200589525
2013	4.722829960702612
2014	-3.362281278639273