自1950年以来这样的情况仅仅在1974年9月至1977年9月这37个月发生过，这是上个世纪美国发生最严重通货膨胀的阶段。
The only precedent for this since 1950 was the 37-month period from September 1974 to September 1977, which launched the worst inflation the US has seen in the last century.