This guide is currently under construction and we will be adding further sections. Please let us know if you are looking for statistics or other sources which are not yet available and tell us about any sources you would recommend.
Capital IQ provides a variety of Macroeconomics including GDP, population, currency etc. It can be searched in a variety of ways e.g. Markets > Macroeconomics and then search for a country.
You can then click on the economic indicator you want to pull up the data and get options to change the time series, export to Excel etc.