Since 2002, the primary energy supply increased, to 3,543 Mtoe in 2011. Coal, natural gas and oil products were the “big losers” since economic changes have forced many consumers to limit their consumption. Supply of coal has declined from approximately 896,000 tons of oil equivalent (ktoe) in 1990 to 13 ktoe in 2002, and increased slightly to 157 ktoe in 2011. Oil products followed the same trend with a consumption decrease from 3,186 ktoe in 1990 to 547 ktoe in 2008, then an increase to 1,009 ktoe in 2011.