Bill Gates is the richest man in the United States for the 20th straight year and has made a comeback as the richest man in the world.
The Microsoft founder’s 72 billion dollars net worth made him to the annual Forbes list of the 400 wealthiest individuals.
The annual Forbes 400 wealthiest Americans list showed that Warren Buffett, who despite giving away about one billion dollars last year, was the biggest gainer, adding 12.5 billion dollars to bring his fortune to 58.5 billion dollars, made it to the second position.
Many of the younger billionaires who made their fortunes in the tech industry - Facebook's Mark Zuckerberg (20), Computer maker Michael Dell (25), Yahoo's Jerry Yang (327), Tesla Motor's Elon Musk (61) and Google's Larry Page and Sergey Brin (13 and 14).
Mayor Bloomberg, the world's richest mayor, is No. 10 with a 31 billion dollars net worth, 6 billion dollars more than last year.
Zuckerberg jumped back into the top 20 this year after earning an extra 9.6 billion dollars.
The top 10 rich people in US:
1. Bill Gates $72
2. Warren Buffett $58.5 B
3. Larry Ellison $41 B
4. Charles Koch $36 B
4. David Koch $36 B
6. Christy Walton & family $35.4 B
7. Jim Walton $33.8 B
8. Alice Walton $33.5 B
9. S. Robson Walton $33.3 B
10. Michael Bloomberg $31 B