Zuckerberg first became a billionaire in 2008, just four years after founding Facebook. At 23, he was the youngest self-made billionaire at the time, debuting at No. 321 on The Forbes 400, worth $1.5 billion. By 2011, Zuckerberg’s net worth had increased nearly 12 fold to $17.5 billion. This year isn’t the first time Zuckerberg’s net worth has taken a dive. After Facebook’s famously disappointing IPO in 2012, Zuckerberg fell from No. 14 to No. 36 on The Forbes 400. But it didn’t last long. The following year, Zuckerberg bounced back and, up until now, his fortune has continued to climb. Despite the litany of controversies and scandals plaguing the company, Facebook’s ad machine had reliably churned out enough money to impress investors, sending Zuckerberg’s net worth soaring to $134.5 billion last year, his highest net worth ever.