I'm looking for numbers on how many stock options the new software
engineers at Yahoo and Ebay are currently being offered. I'd also be
interested to hear how many options new employees at Microsoft were
offered historically offered, say, in the late 80s to mid 90s.

The data needs to be per-employee, not total. E.g. "One software
engineers at Ebay says he was given options for 2,000 shares when he
joined in 2004. The stock price was at $50." (I'm just making this
data point up.)