Here's a controversial 8-year old study made by a scientist that says IQ relates to how much economy works. There was even a theory on asian cultures preventing creativity or flexibility that it hampers progress.

Do you believe that the wealth and progress of a nation is dependent on the intelligence of its people?

Here's the top 10 list:
Country IQ estimate

Hong Kong (China) 107
South Korea 106
Japan 105
Taiwan (ROC) 104
Singapore 103
Austria 102
Germany 102
Italy 102
Netherlands 102
Sweden 101

See the complete list here