Approximately 49% of American adults now have a high-speed internet connection in their households, up from just 12% in 2002. DSL represents the majority of this expansion, with DSL penetration increasing by 575% over the past six years. Cable modem services have also achieved significant growth, however, with subscriptions increasing by 188%.
Full Story: http://www.teleclick.ca/2008/04/us-broadband-penetration-up-300-since-2002/
(Many thanks to Michael Strand, Strand & Associates, PLLC for passing this along. Russ)