Year	Tonnes of Oil Equivalent
1971	0.0405
1972	0.04882
1973	0.05867
1974	0.06242
1975	0.04964
1976	0.05724
1977	0.05797
1978	0.05031
1979	0.05396
1980	0.05444
1981	0.05087
1982	0.03248
1983	0.02398
1984	0.02107
1985	0.01518
1986	0.02062
1987	0.01718
1988	0.01977
1989	0.0192
1990	0.02294
1991	0.02794
1992	0.0279
1993	0.02675
1994	0.02563
1995	0.02527
1996	0.02511
1997	0.02457
1998	0.025
1999	0.02275
2000	0.02391
2001	0.02274
2002	0.02052
2003	0.02307
2004	0.02382
2005	0.02415
2006	0.02323
2007	0.02174
2008	0.02214
2009	0.01971