Year	Tonnes of Oil Equivalent
1971	0.0486
1972	0.04415
1973	0.04543
1974	0.04572
1975	0.03756
1976	0.03661
1977	0.03976
1978	0.03639
1979	0.03547
1980	0.03349
1981	0.0348
1982	0.02766
1983	0.02515
1984	0.0275
1985	0.0266
1986	0.02927
1987	0.02889
1988	0.02847
1989	0.02795
1990	0.02726
1991	0.02561
1992	0.02594
1993	0.02603
1994	0.02491
1995	0.02441
1996	0.02422
1997	0.0241
1998	0.02409
1999	0.02318
2000	0.02328
2001	0.02314
2002	0.02378
2003	0.02416
2004	0.02356
2005	0.02225
2006	0.02033
2007	0.01838
2008	0.01662
2009	0.015