These pressures have been supplemented by shifts in income toward the oil-exporting countries, which more recently have built surpluses because of steep increases in oil prices. The changes in shares of world GDP, however, have had little effect  1  Under current law, those longer-run pressures on the federal budget threaten to place the economy on an unsustainable path.
As of end 2006, completed acreage of affordable housing (including housing built for employees with collected funds) across China surpassed 1.3 billion square meters, enough to accommodate 1.65 million lowincome households. As of October 2007, 644 out of 656 cities established the low-rent housing system, accounting for 98.2% of the total, and improving the living conditions of 681,000 low-income families.