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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By having aerators and water flow restrictors fitted on your taps, the flow of water will feel stronger, but will consist of less water and more air. Aerated taps can reduce the water flow by 30-40 %.
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