It would be difficult to know the exact amount WWE wrestlers earn in a year. The wrestlers are most definitely not paid the same amount. The amount they are paid depends on the contract and the current popularity of the wrestler.
According to Forbes, an average WWE wrestler makes $500,000 a year and top wrestlers make $1 million and much more in a year. The current top paid WWE wrestlers are: Brock Lesnar, John Cena and Triple H.
It will be hard to determine the individual pay of each wrestler that goes into the ring. It will depend on their current popularity, how new they are to the industry, and so much more. Wrestlers have different contracts depending on what they are set out to do. There are some who make as much as $500,000 but expect that top performers, and the most popular WWE characters earn about 7 figures every year.
The high pay is not surprising given the fact that they use their bodies every time they perform. Wrestlers know the risks of their jobs. Some have to leave their jobs because of injuries while some cannot keep up anymore with the demanding schedule that being a wrestler requires.