Year	annual % growth
1961	6.33789263592868
1962	6.5203396422945
1963	7.06664306949199
1964	7.03997008395483
1965	7.39477949775637
1966	8.7981859516179
1967	7.03204617838857
1968	8.30498406438392
1969	7.31478587304302
1970	9.84338125543027
1971	7.4769675783386
1972	5.1742663062297
1973	5.54547772145888
1974	0.502565286131613
1975	11.772801596681
1976	4.75066854496136
1977	4.39483642719046
1978	5.26883684571095
1979	4.56184026470832
1980	3.94454112678586
1981	5.59318722652154
1982	3.98434437149243
1983	4.10243594634014
1984	3.25105742831285
1985	2.48906052365103
1986	3.26181354304327
1987	3.76521771074079
1988	4.25694793534508
1989	3.76339636582247
1990	4.31918849984562
1991	4.21606228075756
1992	3.14148728722157
1993	3.478011774634
1994	3.40235444456853
1995	4.20793444796035
1996	3.2823717677023
1997	1.89062898184851
1998	1.37575274543768
1999	3.39286454596403
2000	3.47389962696845
2001	3.62075423430473
2002	3.18616082333642
2003	2.41044410669893
2004	2.05883659706475
2005	1.84527562402796
2006	1.63490815548977
2007	2.40496838694422
2008	1.53239883462317
2009	3.49881771671461
2010	2.37802211066611
2011	2.54853558320754
2012	2.5958701630157
2013	1.97574593852788
2014	1.32333910464651
2015	2.1959339626239
2016	2.25519296202521
2017	1.53110938813616