Among other things, they have a comparison of broadband usage by age group comparing 2005 with 2008. As you can see the growth is huge.
Pew has also made available a number of charts including those included here in this slideshare presentation.
Generations Online in 2009 Charts
View more presentations from PewInternet.
Much of this should be no surprise to you. But it is educational to re-familiarize yourself with where things stand.
