YearTrade ValueWeight (kg)Quantity
2005$20,447,2170401,635
2006$25,076,60102,508,475
2007$32,462,60902,387,807
2008$25,105,3870579,900
2009$37,322,0300912,800
2010$48,375,14301,635,904
2011$80,407,18902,794,928
Note: Quantity represents Electrical energy in thousands of kilowatt-hours