Year	annual % growth
1961	3.993037755371205
1962	7.512527898260828
1963	28.26088172921436
1964	31.234852274533978
1965	32.88787454808974
1966	8.781572410480749
1967	7.977092015076607
1968	5.3099926111244855
1969	46.7580153898181
1970	60.229438890452315
1971	7.207620168092291
1972	-32.680321244547656
1973	-36.1111114788944
1974	2.898553427740552
1975	-6.6398421747515215
1976	-9.024831872864397
1977	6.870002834816958
1978	8.81133934874228
1979	15.533469710520649
1980	12.805881660968609
1981	2.500981010024134
1982	17.937455609406427
1983	2.941612336292181
1984	-19.359367181233196
1985	-23.9291317951879
1986	17.430254652986193
1987	-1.2860010344697343
1988	26.319321464034246
1989	2.5345590674988188
1990	-9.1203815723958
1991	22.4535724789654
1992	-7.766552085898468
1993	-8.70287413059036
1994	6.221591391220542
1995	0.44526985124848295
1996	-7.911341075493851
1997	-14.71949091308592
1998	-5.188879176298116
1999	-5.225679448715752
2000	72.62073387498242
2001	5.756858647698351
2002	-2.8229443803284653
2003	-6.167022748911293
2004	-0.48020275782864985