WASHINGTON, D.C., SEPTEMBER 12, 2013: Producer and manager Miguel Pena, right, takes care of the sound mixing for rappers Pacman, center, and Peso during rehearsal and recording at the home of Ramsey Aburdene, 24, from Washington, D.C.. Miguel receives no money for his help and works in retail during the day to support himself. (Photo by Astrid Riecken for The Washington Post) (Astrid Riecken/For The Washington Post)

Three million Internet users from 214 countries pledged $480 million on Kickstarter in 2013, according to the crowdfunding site’s year-end report.

This is slightly up from last year, when 2.2 million people contributed about $320 million to various projects in exchange for non-financial rewards.

Almost 20,000 projects were successfully funded on the platform this year — only slightly more than about 18,000 last year. Kickstarter enforces an all-or-nothing policy, which prohibits entrepreneurs from collecting funds unless they reach their fundraising goal by a particular deadline.

A possible signal that Internet users are becoming more comfortable with crowdfunding, the number of people backing multiple projects significantly. Slightly more than 800,000 people backed more than one project and about 81,000 backed 10 or more projects in 2013 — last year it was about 570,000 and 50,000, respectively.

The annual report highlighted some of Kickstarter’s most successful projects, including one from a Southeast Washington rap duo who raised more than $10,000 to shoot a music video in North Korea.