(CNN) - Facebook founder Mark Zuckerberg and his wife Priscilla were America's top donors in 2013, according to a new report from the chronicle of philanthropy.
Fifty donors made the list.
Of all of them, Zuckerberg and his wife were the most generous, donating nearly a billion dollars worth of Facebook stock to the Silicon Valley Community Foundation.
The organization provides grants to a variety of non-profits.
In total, the chronicle found 50 donors gave a total of $7.7 billion in 2013, up four percent from 2012.
The chronicle credits last year's improving economy and booming stock market for the surge in donations.
Other donors who made the list include Nike's co-founder Phil Knight and former New York Mayor Michael Bloomberg.
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