As for comparisons, I'm not sure but google enough and you can probably find them them. Otherwise, got to the sec website and download their financial statements. Here is the most recent filing
Three Months Nine Months
Ended August Ended August
2005 2004 2005 2004
(in millions, except per share amounts)
Revenues
Investment banking $ 998 $ 854 $ 2,667 $ 2,536
Trading and principal investments 4,842 2,424 11,545 9,652
Asset management and securities services 772 620 2,270 2,036
Interest income 5,721 2,905 14,764 8,160
(Sorry for the formatting)
Unfortunately these trading revenues don't segregate by principal accounts (prop) from market making. If you dig around I'm sure someone can find some reasonable guesses. Either way it has been an ever increasing source of income on wall street in recent months. that's why there have been so many surprises come earnings season with banks. Certain activity such as M&A and most asset management (where the manager recieves income by AUM not incentive) are relatively easy to predict. But when the firms capital is used to make countless bets, its anyones guess (and if history is any guide, that includes much of senior management).
For a detailed look in how bonuses for GS are likely to be divided read the following article from New York Magazine. To summarize, of course the money is distributed unevenly. But that's what should be expected of one of the kings of Capitalism. Also don't forget, why they're making some nice coin, there's sure to be some hedge fund managers who would be down right embarrassed to receive these bonuses.