The odometer on PubMed Central® turned over a slew of zeroes in October,
when someone somewhere retrieved the ONE BILLIONTH article in 2017 from this free, full-text archive.
That’s one billion articles retrieved in less than 10 months—a breakneck pace on par with the iPhone
App Store’s one billionth download, which took 9 months and 12 days back in 2009.
The first two paragraphs from:
Happy One Billion, PubMed Central!
"NLM Musings from the Mezzanine" Blog posting by Patti Brennan (Director, US National Library of Medicine)
Posted on December 19, 2017
https://nlmdirector.nlm.nih.gov/2017/12/19/happy-one-billion-pubmed-central/