Ukraine’s former president paid bribes worth at least $2 billion (£1.4 billion) during his four years in office – amounting to almost $1.4 million for every day he was in power – according to evidence handed to investigators.

Viktor Yanukovych, who was toppled during Ukraine’s revolution in 2014, appears to have kept a detailed record of backhanders distributed while he was in government.

A logbook has emerged listing the bribes paid to former and serving Ukrainian officials. In particular, election commissioners were handsomely rewarded in return for guaranteeing victory for Mr Yanukovych’s Party of Regions in the parliamentary election of 2012.

“We know that it’s real because of the minutiae of the detail - that so many of the small details corroborate with events or activities that took place under Yanukovych,” said Serhiy Leshchenko, the Ukrainian investigative journalist turned MP who published the logbook.