I need a panel data for the membership of GATT and WTO for all countries in the world. Do you know where to download such a file?
This database includes all multilateral and bilateral trade agreements as notified to the World Trade Organization for the last 66 years from 1950 to 2015. There is a total of 468 agreements in the dataset that are differentiated along five different categories. Additionally there are variables indicating whether countries were founding members or joined later.