YearTrade ValueWeight (kg)Quantity
2005$20,756,89601,393,607
2006$18,973,84401,174,086
2007$9,666,5920443,280
2008$27,356,9730808,822
2009$27,938,9740710,357
2010$15,263,6550392,039
2011$40,073,0470794,497
Note: Quantity represents Electrical energy in thousands of kilowatt-hours