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Elon Musk became a billionaire in 2012.
- The world's billionaire population has more than doubled over the past decade, Forbes' 2010 and 2019 Billionaires lists show.
- The wealthiest woman in the world, Francoise Bettencourt Meyers, only joined the three-comma club in 2018, Business Insider previously reported.
- Not everyone who became a billionaire in the past decade stayed one, however.
- Business Insider rounded up some of the biggest names to become billionaires in every year over the past decade.
- Visit Business Insider's homepage for more stories.
It's not easy to become a billionaire, but hundreds of people do it every year.
There are currently 2,153 billionaires in the world, according to Forbes, up from an estimated 793 at the start of the decade. However, while more than 1,811 people spent time in the three-comma club over the past decade, not everyone who became a billionaire in the past decade stayed one.
Just consider Theranos founder Elizabeth Holmes and Juul cofounders Adam Bowen and James Monsees, who all lost their billion-dollar fortunes within months of making them. In 2019 alone, 195 people became billionaires, Forbes reported.
Keep reading to meet some of the most notable people who became billionaires over the past decade, organized by the year they were added to Forbes Billionaires List. All net worths below reflect 2019 data.