Labour productivity: GDP per annual working hours [1999 US$ (converted at EKS PPPs) per hour]; materials productivity: GDP per Domestic Material Consumption (DMC) [EUR per kg]; energy productivity: GDP per Total Primary Energy Supply (TPES) [thousand 1995 US$ per toe]
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Help it consume less energy by keeping it full. It requires less energy to cool a full freezer than an empty one. Should you not have filled it, add some plastic bottles filled with water or even old newspapers – until you need the space!
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