If you asked me, I would have said “most of the time” or “almost every time” but 99%. That’s crazy!
“Google loves Wikipedia. Everyone knows it, and many aren’t that happy about it, especially when some of their poorly written content outranks higher-quality websites on the same subject. But did you know Wikipedia pages appear on Page 1 of Google for 99 percent of searches?
Beyond that staggering number, Wikipedia is the No. 1 result on Google for 56 percent of searches, while 96 percent of searches saw Wikipedia in one of the top five positions. Only eight keywords (Mail, news, trainers, national, sweets, wardrobe, phone, flight) didn’t appear on Page 1.”
More at: Search Engine Watch.