Impossible to answer. Billions and billions of tonnes. Cardboard is thrown into landfill all over the world, when it could all be recycled to make more cardboard.
too much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!yes of course but you have to mesure it in watts or volts then you can find out how...