Democratic presidential candidate Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE on Wednesday released two more years of his tax returns, ahead of the presidential debate in Atlanta later in the day.

Buttigieg released tax returns for 2007 and 2008, years when he worked as a consultant at McKinsey & Company. The South Bend, Ind., mayor previously released his tax returns for 2009 to 2018 in April.

In a statement, Buttigieg called on other candidates to release information about their income.

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"As someone who worked in the private sector, I understand it is important to be as transparent as possible about how much money I made during that time,” Buttigieg said. “Every candidate in this race should be transparent with voters by disclosing their income in the private and public sectors."

Buttigieg's 2008 federal tax return reports adjusted gross income that year of $122,680 and total taxes of $25,776. His 2007 return reports adjusted gross income of $80,397 and total taxes of $13,954. Buttigieg worked at McKinsey from 2007 to 2010.

The release of the additional tax returns comes as Buttigieg has seen increased support in a number of polls. Several recent polls have found him leading in the early caucus and primary states of Iowa and New Hampshire.

Many of the Democratic presidential candidates have released at least 10 years of tax returns in an effort to draw a contrast with President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE — including former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) and Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.).

Trump in 2016 became the first major-party presidential nominee in decades to refuse to release his tax returns. Trump has said he won't release his returns while he's being audited, but the IRS has said that audits don't prevent people from making their own tax information public. In July, House Democrats filed a lawsuit in an effort to obtain Trump's federal tax returns from the IRS.