"It took [Google] about 15 years to get rid of the brain teasers (1998 to 2013ish from what I can tell),..." During which time the company grew from what to wh

"It took [Google] about 15 years to get rid of the brain teasers (1998 to 2013ish from what I can tell),..." During which time the company grew from what to what? (Actually, when I interviewed in ~2003, I didn't get any brain teasers. All of the questions where either fundamental computer science knowledge or related to the (SRE) position---although they would all be considered "leetcode" by someone without the background. I was pretty impressed.)