一个仅等同于GDP0.3%的年度刺激计划可以为美国的GDP带来0.8%的贡献，并在2013年达到顶峰，而同样的计划则能让欧洲的GDP取得0.4%的增长
An annual stimulus equivalent to just 0.3% of GDP yields a return in the US of 0.8% in economic growth at its peak in 2013, and 0.4% in Europe.