国会委员会的周期指标:先行指标 NBER Cyclical Indicators: Leading 先行指标在经济中预先上升和下降的经济指标 Leading indicators- tend to rise and fall in advance of the economy 例如 Examples 制造业工人平均周工作时数 Avg weekly hours of production workers 股票价格 Stock Prices17-12