In the United States, there were 222 people ____1____ (report) to be billionaires(ÒÚÍò¸»ÎÌ) in 2003. The ____2_____ of these is Bill Gates, worth at least $ 41 billion, who made his money ____3____ starting the company Microsoft. Mr. Gates was only 21 years old _____4____ he first helped to set up the company in 1976. He was a billionaire _____5___ the time he was 31.