Eurostat (the EU Statistics Office) offers a guide to explain what the circular economy is, along with data showing the state and progress of individual EU countries in moving towards a more circular economy. Information on waste statistics are also available to show how countries are dealing with and reducing waste volumes.
The life cycle of materials and materials flow diagram is particularly informative, showing an accurate state of all material flow from raw extraction, all the way to landfill, air emissions and recycling for the past 10 years.
Circular Economy Materials Flow Tool [Source]