There's a wealth of info there. Nice to see it broken down as such.The DOT tracks direct transportation (fares) and non-transportation/ancillary revenue.
Here is the latest DOT press release w/ amounts for each carrier.
http://www.bts.gov/press_releases/2011/bts047_11/html/bts047_11.html
Note, however, that WN's ancillary revenue - the DOT lists what is involved in that category - as a percentage of total operating revenue is ABOVE THE INDUSTRY AVERAGE and higher than AA.
The industry average for ancillary revenue is 6.2% of total operating revenues.
By comparison, Spirit with their no frills model gets 28.9% of total revenue in ancillary fees, followed by FL, F9, Allegiant, DL, US, VX, WN, and AS - all of which are above the industry average.
.
The notion that WN passengers don't have "hidden fees" is just not accurate.
.
All airlines obtain revenue from sources other than what is on the passenger ticket... the DOT's concern is only that passengers know what is not included and what will be charged when they purchase their tickets. Implementation of the law to fully disclose these fees has been pushed back - IIRC - but the gov't wants more disclosure and the airlines are providing it.