These colleges have pumped out the most millionaires

Bill Gates, Steve Jobs and Mark Zuckerberg. These are some of the massively successful people who never graduated from college.

However, getting a degree is still hugely valuable. And an enormous amount of graduates go on to have wildly successful careers.

Market researcher Wealth-X has released a ranking of the top 20 universities around the world that do just that.

Its University Ultra High Net Worth Alumni Rankings 2017 looks at institutions with the most alumni with a net worth of $30 million or more.

Click through the gallery to see which universities top the list.

All figures in U.S. dollars.