Three foreign fighters blew themselves up and seven others were killed by Pakistan's security forces during the attack on Karachi airport, a paramilitary spokesman said.
Rizwan Akhtar, the regional head of the paramilitary Rangers, said in televised remarks: "Three militants blew themselves up and seven were killed by security forces. The militants appear to be Uzbek."
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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.