Being that it's still 2014, the answer is $2 billion.
Oprah is a television host, CEO, and actress. As of August 2014, her net worth is an estimated $2.9 billion dollars.
Steve Ballmer has a net worth of approximately 18.8 billion dollars as of May 2014.
George Soros has a net worth of approximately 26.5 billion dollars as of May 2014.
Mark Zuckerberg has a net worth of approximately 25.8 billion dollars as of May 2014.
Mukesh Ambani has a net worth of approximately 23.6 billion dollars as of May 2014.
George Soros has a net worth of approximately 26.5 billion dollars as of May 2014.
Jeff Bezos has a net worth of approximately 26.9 billion dollars as of May 2014.
Lakshmi Mittal has a net worth of approximately 17.4 billion dollars as of May 2014.
Charles Ergen has a net worth of approximately 17.1 billion dollars as of May 2014.
Len Blavatnik has a net worth of approximately 17 billion dollars as of May 2014.
Sheldon Adelson's net worth is approximately 35.4 billion dollars as of May 2014.
Stefan Persson has a net worth of approximately 29.7 billion dollars as of May 2014.