When Trump flies, he uses his airplane. When he campaigns, he often chooses his properties or his own Trump Tower in New York City, which serves as headquarters. His campaign even buys Trump bottled water and Trump wine.

The presumptive Republican presidential nominee has been on the campaign trail for a year now, and federal finance reports detail a campaign unafraid to co-mingle political and business endeavors in an unprecedented way — even as he is making appeals for donations.

Through the end of May, Trump’s campaign had plunged at least $6.2 million back into Trump corporate products and services, a review of Federal Election Commission filings shows. That’s about 10 percent of his total campaign expenditures.

Unlike in the primary when Trump touted his ability to pay his own way, he has been on an urgent fundraising quest for more than a month. His campaign began June with $1.3 million in the bank, compared with the $42 million presumptive Democratic nominee Hillary Clinton had amassed.

Wealthy political candidates in the past have walled off their business from their campaigns, but Trump embraces his companies. Public documents indicate his revenue has risen along with his presidential aspirations.

While Trump’s controversial comments have cost his businesses money — for example, the PGA Tour recently announced it would move its World Golf Championship from a Trump course to one in Mexico City — Trump reported in documents filed in May with federal regulators that his revenue had increased by roughly $190 million over the previous 17 months.

Trump’s campaign didn’t respond to detailed questions about the intermingling of his businesses and campaign.

Trump isn’t the first high-profile politician to run a campaign while managing large corporate assets. Former New York Mayor Michael Bloomberg and presidential contender Steve Forbes both ran companies bearing their name.