Former Florida governor Jeb Bush released his 2014 tax returns Thursday showing gross adjusted income for 2014 of $8,279,302, about $1 million more than he received the previous year.

The release came shortly after he reported a relatively low $13.4 million fundraising total for the last quarter.

The filing of the returns had been delayed in part because Bush sold his interest in several businesses in 2014 in anticipation of a presidential run. Final sales figures were not available by the spring tax filing deadline.

The additional income received in 2014 means that Bush has made more than $28 million since he left the Florida governor’s office in 2007. Bush has released more than three decades of tax returns, more than any other presidential candidate.

The returns released Thursday -- like others in recent years  --  show that he has vastly increased his wealth through a combination of speaking fees, investments and consulting contracts. Most of the income reported in 2014 was attributed to Jeb Bush and Associates, the firm he has run with his son that receives consulting, speaking fees and other revenue. The most recent previously tax return showed an adjusted gross income of $7.3 million in that year alone.

Bush's ongoing release of personal records is intended to offer a contrast with Democrat Hillary Rodham Clinton, who has not released her most recent returns and has been dogged by complaints of secrecy.

In addition to his taxes, Bush released a list of campaign bundlers and a summary of his medical condition. His doctor, Alberto Mitrani,  wrote a one page letter describing Bush as a very fit 62 year old.

"He is in excellent physical and mental condition and able to serve in any stressful and demanding executive setting including the Office of the President of the United States," said Mitrani, a member of the Internal Medicine faculty at the University of Florida.