A US Navy spokesman told ITV News:
The U.S. has been working cooperatively with our Malaysian, Australian and international partners for more than 2 months in an effort to locate MH370.
Mike Dean's comments today were speculative and premature, as we continue to work with our partners to more thoroughly understand the data acquired by the Towed Pinger Locator.
As such, we would defer to the Australians, as the lead in the search effort, to make additional information known at the appropriate time.
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The figure is up from £42.3 million in 2014/15 and £56.9 million 2015/16, according to the research.
A study by Which? looked at the work done by councils across the country.
Harry first visited the African country in 2004 on a gap year.