Year	annual % growth
1961	0.0856066659056296
1962	4.09990306209724
1963	9.95106631609698
1964	-2.83968248696399
1965	6.0812196622684
1966	2.98069796668065
1967	5.70279742161593
1968	9.62685573037692
1969	11.7140349692837
1970	24.6177832030074
1971	9.85161478033105
1972	5.35014302362595
1973	4.75328506301966
1974	15.3231999999995
1975	-5.98665316258996
1976	4.93418139960428
1977	-3.18400123759726
1978	12.3108880544435
1979	14.9735179424833
1980	12.3563590138763
1981	4.43293033966592
1982	11.3935094194913
1983	9.40536539603553
1984	8.32697436220171
1985	-10.6389159198848
1986	-7.14779117771357
1987	8.20828574304313
1988	-2.1033687871559
1989	10.3111096422919
1990	17.2587996060354
1991	1.07564313431187
1992	8.48734371198445
1993	16.175613961508
1994	0.0639286806623147
1995	14.1339940922542
1996	9.67992606755332
1997	18.9771599205842
1998	-22.8594690706129
1999	10.4619745952134
2000	25.0340044733898
2001	-21.470219985127
2002	-3.79128910263235
2003	-28.5983866923012
2004	46.4358988617706
2005	-0.502869112124372
2006	14.5273425965173
2007	11.964246876162
2008	29.2569523642424
2009	-11.1455040819096
2010	24.1618949671413
2011	3.25481196507027
2012	14.1467649596608
2013	5.29995022733311
2014	1.75766105475581
2015	-7.01628483720832
2016	10.2371908201266
2017	11.5992053868754
2018	-2.0868572363111