Year	Tonnes of Oil Equivalent
1971	0.02006
1972	0.0186
1973	0.01856
1974	0.01759
1975	0.01977
1976	0.02013
1977	0.01765
1978	0.01561
1979	0.01397
1980	0.01277
1981	0.01395
1982	0.01356
1983	0.01487
1984	0.01526
1985	0.01739
1986	0.01886
1987	0.01891
1988	0.01942
1989	0.0193
1990	0.02051
1991	0.02029
1992	0.02055
1993	0.02098
1994	0.02119
1995	0.0218
1996	0.02221
1997	0.02274
1998	0.02287
1999	0.02391
2000	0.02694
2001	0.02867
2002	0.0275
2003	0.02591
2004	0.02475
2005	0.0248
2006	0.02476
2007	0.02362
2008	0.02406
2009	0.02478