Country, regional and world GDP in current US Dollars ($). Regional means collections of countries e.g. Europe & Central Asia. Data is sourced from the World Bank and turned into a standard normalized CSV (code can be found in process.py of data package repository).

Source

The data is sourced from the World Bank (specifically this dataset) which in turn lists as sources: World Bank national accounts data, and OECD National Accounts data files.

Note that there are a variety of different GDP indicators on offer from the World Bank including:

• GDP in current USD
• GDP in constant USD (2000)
• GDP, PPP (constant 2005 international $)
• GDP (constant LCU)