Project Olson.

The Olson Index is a composite score measuring overall economic health. It normalises each indicator to a z-score (standard deviations from the historical mean) and averages them. Higher values indicate a healthier, less sclerotised economy. The index tracks how many indicators are performing above or below their historical norms, and is therefore not suitable for direct cross-country comparisons. For example, a country with a low score could still be economically 'better' than a country with a high score because it's starting from a much higher level. Toggle countries above the chart to compare.