Put a different way, fifteen or so years ago: "Economists who have studied occupational shortages generally hold the view that in an unconstrained market, supply will equal demand at the 'true' market price. If demand exceeds supply, salaries will be bid up until the market clears." [1]
Also of interest but perhaps unrelated, "At Goldman Sachs and JPMorgan Chase average pay slipped by about 5% in the first nine months of last year, a figure that is probably representative of the wider industry." [2]
[1] http://www.bls.gov/mlr/1999/03/art2full.pdf
[2] http://www.economist.com/news/finance-and-economics/21592642...