The infographic is kinda weak on information, and it doesn't do much to make those numbers any more understandable (what's 138 million books?)

The subject, however, isn't looked at enough in America. I remember being shocked the first time I read about what the NSA does in this New Yorker piece: http://www.newyorker.com/reporting/2011/05/23/110523fa_fact_...

I highly recommend reading it if you're at all interested in this. Fantastic reporting.