“We’re putting these out today to put pressure on Trump and the other candidates to release theirs,” Alex Conant, a spokesperson for the Florida senator’s campaign told the Associated Press. The move comes amid questions of whether GOP frontrunner Donald Trump will release his tax returns.

Rubio’s returns cover the past five years and include the first two pages of his 1040 forms, displaying income earned and taxes paid. They show a steady income of $176,000 per year subsidized by earnings from two book deals—his memoir entitled An American Son as well as a follow up, American Dreams, published just last year a few months before announcing his campaign.

The disclosure shows that, since being elected to the Senate, Rubio’s income ranged from $276,059 to $938,963, and his income taxes ranged from $46,500 to $254,894.

Tax returns released when Rubio ran for Senate show charitable donations to the First Baptist Church of Perrine and, after the institution changed its name, the Christ Fellowship of Miami. This time around he hasn’t released the sections of his returns that show itemized deductions, though Conant assured that if there are “additional questions about Marco, we won’t rule out providing more information in the future.”