Year	annual % growth
1974	105.07485828944465
1975	-20.126778824887452
1976	-0.9259346470568914
1977	-6.208278529334748
1978	-5.0533741127545255
1979	8.020987015786147
1980	-16.377513717574516
1981	-5.643152422722437
1982	-9.234832998993355
1983	-3.1007676743644907
1984	15.899991491099414
1985	-4.141491233675453
1986	12.331231160853221
1987	-1.3621958103744873
1988	3.9805201459544435
1989	5.753899942615476
1990	14.299855769818066
1991	4.240508440520216
1992	-2.0318320379285524
1993	12.022961162915522
1994	8.064269630380295
1995	6.289831497287636
1996	7.833434742610137
1997	-19.719159986480634
1998	3.540039557857469
1999	-10.988801873673424
2000	5.82742013289139
2001	-3.5493967693915067
2002	-3.960467909302622
2003	-10.383747137610357
2004	13.685673990873838
2005	3.7695042662525537
2006	-3.0171921041900305
2007	-7.551577916774249
2008	-0.983392029254972
2009	-13.681550892714057
2010	-12.87699186914935
2011	4.664976101439038
2012	1.5942900229231327
2013	-6.1696999149907015
2014	-4.657997134746083