YearTrade ValueWeight (kg)Quantity
2005$719,513,611019,822,000
2006$619,190,035011,497,000
2007$536,436,565014,729,000
2008$1,026,659,949014,710,000
2009$451,095,89409,081,000
2010$785,407,943013,145,583
2011$1,282,198,553019,596,000
Note: Quantity represents Electrical energy in thousands of kilowatt-hours