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How Much Information? 2003 is an update to a project first undertaken by researchers at the School of Information Management and Systems at UC Berkeley in 2000. Their intent was to study information storage and flows across print, film, magnetic, and optical media.
It’s not surprising that the United States produces more information than any other single country, but it was eye-opening to read that about 40% of the new stored information in the world every year cones from the U.S.
Also surprising is the total amount of instant message traffic in 2002, estimated at 274 terabytes, and the fact that email is now the second largest information flow, behind the telephone.
Some excerpts from the executive summary:
“Print, film, magnetic, and optical storage media produced about 5 exabytes of new information in 2002. Ninety-two percent of the new information was stored on magnetic media, mostly in hard disks.”
“How big is five exabytes? If digitized with full formatting, the seventeen million books in the Library of Congress contain about 136 terabytes of information; five exabytes of information is equivalent in size to the information contained in 37,000 new libraries the size of the Library of Congress book collections.”
“Hard disks store most new information. Ninety-two percent of new information is stored on magnetic media, primarily hard disks. Film represents 7% of the total, paper 0.01%, and optical media 0.002%.”
“The United States produces about 40% of the world’s new stored information, including 33% of the world’s new printed information, 30% of the world’s new film titles, 40% of the world’s information stored on optical media, and about 50% of the information stored on magnetic media.”
“How much new information per person? According to the Population Reference Bureau, the world population is 6.3 billion, thus almost 800 MB of recorded information is produced per person each year. It would take about 30 feet of books to store the equivalent of 800 MB of information on paper.”
“Most radio and TV broadcast content is not new information. About 70 million hours (3,500 terabytes) of the 320 million hours of radio broadcasting is original programming. TV worldwide produces about 31 million hours of original programming (70,000 terabytes) out of 123 million total hours of broadcasting.”

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