In this analysis by Xiang Dong Qin of Clemson University, the green line shows countries with strong protections for property rights;the red curve shows countries with weaker protections.

• 在向冬琴（音）的分析当中，绿色的线代表了严格保护产权的国家，红色的线则代表了对产权保护薄弱的国家。