President Trump's golf club in Southern California has reportedly seen large drops in business since Trump launched his presidential bid.

Revenue from greens fees at his club in Los Angeles County has dropped by about 13 percent since June of 2015, according to figures from the city government obtained by The Washington Post.

“It’s under-performed the market since 2015,” said Craig Kessler of the Southern California Golf Association, according to the newspaper. “Just at the time when the rest of the industry was starting to see some upticks ... it seems to have gone into a decline.”

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The Post noted that the club has also lost other sources of business, pointing to several charity golf tournaments that have stopped holding their events at the course and producers' decisions to stop using the course as a location for TV shows and movies.

Not every one of the events' organizers referenced politics as the reason they were moving, the newspaper pointed out.

The number of wedding receptions held at the club has also reportedly seen a large drop since Trump launched his presidential bid and then assumed office.

The Post said it received one response to its inquiries.

“David — please stop reaching out to me. Thank you,” Eric Trump, the president’s son, wrote in an email, according to the newspaper.