Index, 1960 = 100
A wider gap = the economy produces more with each unit of energy
Source: 
Aggregate of the G7 countries (published chart based on World Bank and OECD data). Approximate values digitized from a published chart
Charts from Italy
Only the charts that use data from this country. Charts with several countries appear under each one of them. (1 chart)
Energy
The price of oil and how much energy the world uses.