Consensus Economics collects forecasts from over 1000 economists around the world each month. It was founded in 1989 to measure consensus expectations, which are seen as macroeconomic forecast benchmarks by investment and planning managers, as well as government and public sector institutions.

The Forecast Accuracy Award program recognizes the achievements of a select group of expert country economic forecasters who have most accurately predicted the performance of GDP growth and Consumer Price Inflation for their targeted economies over a 24 month forecasting cycle.

https://www.consensuseconomics.com/cf-2018-forecast-accuracy-award-winners