Salaries are very hard to pinpoint since there are so many subjective considerations (house show revenue, merchandise sales, PPV appearances and buyrates). Your best bet is to try search engines, I think some people here are starting to get annoyed with all the threads asking people to look up facts and figures for them rather than discussing issues in wrestling.
Where? The last six single brand PPV's have gone 250k, 205k, 280k, 240k, 230k, 225k. Thats hardly evidence enough to suggest a decline, especially when you allow for the rounding that appears to go on (to the nearest 5,000 or so).