1990
45.5
Natural gas
2005
57.1
Natural gas
2014
67.4
Natural gas
1990
17.9
Solid fuels
2005
39.4
Solid fuels
2014
45.6
Solid fuels
1990
80
Oil (total)
2005
82.1
Oil (total)
2014
87.4
Oil (total)
1990
44.2
All Products
2005
52.2
All Products
2014
53.5
All Products