I meant that quote to read as "dollars." My bad. It's at somewhere north of $250k lifetime -- you can probably find it here http://www.bingocardcreator.com/stats/sales-by-month . (I don't keep tabs on it very often anymore.)
For those wondering, the relevant line: "All time $277,447.49"
While glancing at the data though, it appears something must have shifted about 12 months ago and you're on track to make a lot less than you had up through 2012.
Saturation maybe?
Search engine ranking changes is more like it. Mostly due to Google algorithm changes.