I love using Medline statistics to show the value of medical librarians to our clinicians. I like to ask, "Do you really want to be trying to keep up with the literature on your own when there are almost 3,000 new citations added to Medline every day?" Of course not!!
I get these numbers from the very interesting Key Medline Indicators
page from the NLM.
Did you know that there were 1.8 billion Medline searches last year? By the way I felt at the end of the year, I'm pretty sure I performed about half of those!