Maddison Project Data
Relatively easy access is provided to Maddison project data, which collates all the credible data on population and GDP for 169 countries, with some dating back to the year 1. 'MaddisonLeaders' makes it easy to find the leaders for each year, allowing users to delete countries like OPEC with narrow economies to focus on the technology leaders. 'ggplotPath' makes it easy to plot data for only selected countries or years.
Useful links