Recently, savings rates have also inreased sharply in oil-producing countries, with the boost in income from high oil prices. - One should also emphasise the factors related to indebtedness and financial investment. By definition, the increase in an economy's indebtedness is the counterpart of its current account deficit.
Often mentioned as determining factors in international capital flows are the depth of US financial markets and the US dollar's position as major reserve currency. These factors draw investment funds into the USA and so provide the financing for US domestic demand.