text: The United Nations commonly uses the ratio of this quantity to GDP as a growth indicator, with Guinea having the highest value of that ratio at about 75%.
full_question: The United Nations commonly uses the ratio of this quantity to GDP as a growth indicator, with Guinea having the highest value of that ratio at about 75%. For a closed economy, this quantity is exactly equal to savings. The "net" amount of this quantity is positive when the total stock is increasing over time, and can be calculated as its "gross" amount minus total depreciation costs. An identity sets GDP equal to consumption, plus government expenditure, plus net exports, plus this quantity. For 10 points, give this quantity which equals total expenditure on capital in an economy.
first_sentence: The United Nations commonly uses the ratio of this quantity to GDP as a growth indicator, with Guinea having the highest value of that ratio at about 75%.