Japan's financial support for U.S. forces stationed in the country is at an "appropriate" level under a bilateral agreement, the nation's top government spokesman said Wednesday, after remarks by U.S. President Donald Trump that it should be increased.

Tokyo earmarked about ¥197.4 billion ($1.8 billion) in the current fiscal year through March for what is known as "host-nation" support, which covers costs for base workers, utilities and other items. As the current five-year payment agreement is set to expire at the end of March 2021, new negotiations are expected to be in full swing next spring.

"We have been sharing the cost of stationing U.S. forces in Japan appropriately based on the existing bilateral agreement," Chief Cabinet Secretary Yoshihide Suga said at a news conference.