On May 18, 2012, Mark Zuckerberg, wearing one of his signature black hoodies, rang the opening bell on the Nasdaq stock market, kicking off trading for Facebook — one of the most highly anticipated IPOs in history.

Immediately, the market went bonkers: Nasdaq's systems couldn’t handle the tsunami of trading volume, and broke down. As Facebook lawyers later suggested in a legal filing, the nail-biting half-hour spooked investors and drove down share prices. After years of buildup, shares of Facebook closed almost flat on the first day of trading.

It turned out to be a fitting omen. Facebook's share price has declined markedly as it struggles to explain how it will earn the kind of revenue its giant IPO promised. Here are some of the numbers behind Facebook’s first year as a publicly traded company:

$104 billion
The total value of Facebook's IPO

$63.2 billion
Facebook's current market cap

Number of times the company’s earnings were multiplied to reach its original valuation

Percentage increase in shares Facebook released for sale just before the IPO, due to heavy investor demand

Minutes Facebook trading was delayed on the first day, due to technical glitches

Original stock price

The high Facebook shares reached on the first day

Closing stock price on the first day

Facebook's current share price (give or take)

$10 billion
Facebook revenue from its initial public offering

Percent Facebook's share price has dropped since opening day

$1.06 billion
Revenue from the first quarter of 2012, before it was public

$1.46 billion
Revenue from Facebook's most recent quarter

Percent of revenue Facebook made from right-column desktop ads before the IPO

Percent of revenue Facebook now makes from mobile advertising

1.11 billion
Active Facebook users as of March

1.06 billion
Active users in December 2012

Average revenue Facebook earned per user in 2012

Sources: The Los Angeles Times, The Wall Street Journal, TIME