The number of the world's billionaires has increased in the last year, once again, according to Forbes 2013 Billionaires List released Monday.
Up by two 200 people from the 2012 billionaires list, the net worth the people who own the world's economy increased by $800 billion in 2013 to $5.6 trillion total.
Atop the list of the wealthiest of the wealthiest sits Mexican telecommunications mogul Carlos Slim Helú, who's been the richest billionaire for the past four years.
He's followed by Microsoft founder Bill Gates and Amancio Ortega, who's Spanish retailer Zara not only netted him the biggest gain in fortune in 2012 -- $19.5 billion -- but also moved him ahead of perennial Top 3 finisher Warren Buffett.
This year is the first time since 2000 that Buffett isn't among the top 3 wealthiest humans, despite adding $9.5 billion to his fortune last year.
Among the world's youngest billionaires -- those younger than 40 -- four come from the social media giant Facebook: Dustin Moskovitz, Mark Zuckerberg, Eduardo Saverin, and Sean Parker.
The 29 billionaires under 40 account for $119 billion in wealth, 10 come from the technology sector and 11 come from the United States.
Click here to see the photo gallery of the 1,426 billionaires who made Forbes' list.