Year	annual % growth
1961	-2.87095416835632
1962	5.12981465452127
1963	-4.39754652987406
1964	6.2526542333737
1965	-7.68156551381989
1966	6.11648338611481
1967	-2.3693211403393
1968	-0.878837995486876
1969	8.25916082504735
1970	6.31359873539776
1971	-0.221167879880753
1972	1.37862350336331
1973	0.989806430818135
1974	-2.64994149207183
1975	2.85430927900772
1976	-3.59981298007541
1977	-0.811560387665281
1978	3.0520179973051
1979	4.91207783296883
1980	8.6186972727277
1981	2.73753356414097
1982	-9.67117343051662
1983	-12.3990872286585
1984	-1.06200610444489
1985	2.48235642141748
1986	10.9754890640978
1987	15.8041022592152
1988	-0.396596203457705
1989	0.753827122313623
1990	-3.60472700763546
1991	5.03844341242858
1992	14.391547109265
1993	5.79606125192041
1994	8.88263811473206
1995	-3.67471553702892
1996	8.27018284670724
1997	5.85718487620814
1998	5.55003574602667
1999	-0.395760468062591
2000	-2.49724580491522
2001	-4.06736007180196
2002	-9.51317307018587
2003	-4.00645829086199
2004	3.9333347116137
2005	5.8823161867509
2006	6.45270128891771
2007	7.0926940680198
2008	9.0953355004425
2009	2.29743578066464
2010	9.40172039623425
2011	7.15562529944059
2012	4.92956373272439
2013	5.52768625763204
2014	2.96661133975226
2015	-0.485394857446281
2016	0.0919764055536234
2017	4.62090493754414
2018	1.5161751688148