求助ICRG计算的这四个指标的数据

跪求根据ICRG计算的这四个指标的数据(i) nationalization Epotential, (ii) infrastructure quality, and (iv) bureaucratic delays

The IRIS Dataset, based on data obtained from the International Country Risk Guide (ICRG). The dataset includes computed scores for six ICRG political risk variables: corruption in government, rule of law, bureaucratic quality, ethnic tensions, repudiation of contracts by government, and risk of expropriation. 请问楼主有这个数据集或者知道怎根据ICRG计算吗，感激不尽