Liberal billionaire George Soros spent more on lobbying during President Donald Trump's first year in office than he has in any previous year, disclosure forms show.

The Open Society Policy Center, a D.C.-based 501 (c)(4) nonprofit that focuses on domestic and international advocacy efforts and is a separate entity from Soros's Open Society Foundations, poured $16.2 million into lobbying throughout the entirety of 2017.

Soros's group reported spending $4.6 million during the first half of 2017 on its lobbying efforts. During the third quarter, Soros added $1.25 million to the total. Most of the lobbying expenditures—$10.3 million—were spent during the fourth quarter, which spans from October 1 to December 31.