Scotland has fallen three places to 18th in the rankings of developed countries in recent years as a result of the North Sea oil and gas slump.
Although the Scottish Government has not updated its international ranking of GDP per capita - a snapshot of individual citizens' wealth - figures have been compiled by leading economist John McLaren of the Scottish Trends website.
"Scotland has fared relatively badly since 2014, dropping 3 places to 18th, now just behind the UK in 17th," Prof McLaren states..
"The main reason for this relative fall is the decline in the contribution of the North Sea, in turn a combination
of a falling oil price and falling North Sea output."
More recent figures indicate that Scotland's economy is recovering after an improvement in the North Sea industry which has seen the global oil price increase.