A growing industry for the production and consumption of pornography developed in the latter half of the 20th century. The introduction of home video and the Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. Commercialized pornography accounts for over US$2.5 billion in the United States alone, including the production of various media and associated products and services. The porn industry is between $10–$12 billion in the U.S. In 2006, the world pornography revenue was 97 billion dollars. This industry employs thousands of performers along with support and production staff. It is also followed by dedicated industry publications and trade groups, award shows, as well as the mainstream press, private organizations (watchdog groups), government agencies, and political organizations. Videos involving non-consensual content and cybersex trafficking have been hosted on popular pornography sites in the 21st century.