81 Countries data

The data includes a wide range of variables, including GDP per capita (GDPPC), external debt as a percentage of GDP (ED), foreign direct investment (FDI), inflation (Inf), government expenditure (GE), exports of goods and services as a percentage of GDP (Exp), and official exchange rate to USD (Oex). Other variables include LNED and LNED^2, the log transformation of external debt, and the square of LNED, respectively.

Similarly, LNExp and LNOEx correspond to the log transformation of exports and official exchange rate. The data is collected from World Development Indicators (WDI), and then cleaned and transformed for final analysis.