Total includes bonus and equity (which makes up the bulk of it, especially in later years). So some of the increases are also just reflecting increases in GOOG from grant to vesting.

I'm a software engineer. My impression is that pay for PMs (product managers) is very similar, although I couldn't say for sure. Not sure about other positions. And for QA specifically, I believe a lot are hired through a vendor so I imagine it would be very different.

I don't know if I have particularly useful advice. I think honestly it's a mix of happening to be good at what I do, working hard, and being in the right place at the right time (both in terms of ending up Google and being on the teams/projects that I did which helped me rise quickly).

The only thing I would say is that I very much did not go in expecting this or with the idea of optimizing for it. When I joined at the end of 2007, Google was already post-IPO and it wasn't clear (to me at least) that there was "big bucks" to be made there. At that time, it seemed like going into finance or to a startup was the way to go to optimize for that, and I thought I was leaving a bunch on the table picking Google over those. I do think it helped working with the mindset of doing what I truly enjoyed instead of "doing it for the money".