gdpMost publicly available GDP data is two years old, ending in 2009 or even 2008. Is there any data source which provides at least preliminary GDP data for 2010 and 2011? (at least for OECD countries).
The Economist magazine publishes current-year forecasts, as well as next-year forecasts and most recent available quarter.
A description of the individual columns in that table, is given in this answer
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