Here is an interesting article. If you follow the link at the bottom for the rest of the article, it goes on to say that most engineering millionaires made their fortunes as entrepreneurs.
Engineering Most Popular Degree Among Millionaires
Posted on November 18, 2013 by admin
by Marc Howefrom Sourceable 14th November 2013
A new survey has found that an engineering background produces more millionaires than any other form of tertiary instruction.
The survey, conducted by wealth management publication Spear’s and consulting firm WealthInsight, found that engineering was the most popular degree amongst the world’s millionaires, beating out even MBAs and computer science and finance degrees.
MBAs came in second after engineering, with economics, law and business administration degrees rounding out the top five. While engineering was at the top of the list, the only other STEM subject represented in the top 10 was computer science, logging in at number eight.
Other disciplines common among the world’s millionaires included commerce, accounting, politics and finance.