Hello guys,
I am using gravity model to estimate trade effects along China Mongolia Russia economic corridor of Belt and Road Initiative. However i am having some problems getting my regression results on Stata. i think it is because of my dataset i compiled. I have compiled data from 2016- 2018(because it was initiated in 2016) to check the effect of Belt and Road. When i run the regression i constantly get the "insufficient number of observations". Also my variables are being omitted because of collinearity. I have attached my data set in xlsx. Can someone please give me advice on my panel data? I would really appreciate the help.
Thank you in advance