That was down from an earlier estimate of $165.1 billion.
Last year, it reported only 121 new cases, down from estimates of 650,000 two decades ago.
This was an increase of 70,000 from a previous estimate in 2000.
The scientists said they did not know why the European rate was so different from previous estimates.
But the Government has retreated from early estimates that 7,000 people had died.
The game's length increased from original estimates of 3-5 hours to 8-10.
About 400 people are expected to attend the meeting, which runs through Saturday, down from earlier estimates of 430.
The £60bn comes from a rough Russian estimate of $100bn.
Additional construction costs meant the final total was £736,000, up from an original estimate of £235,000.
The increase comes from a new estimate of the total revenues the state will collect.