93 World Records have been broken
He's broken 14 world records and 3 still stand
30 world records were broken during the Olympic games. Olympic records were also broken as were many athletes individual record for the event
32 new world records were set and there were also new Olympic records set with 11 just in the 47 athletic events and 20 more in the 34 swimming events. There are also many other records for World Junior, Asia, African, European, Country and individual records
8
26
Heaps
four
20
25
216
There is no fixed number of world records being broken each year as it varies depending on the competition and the specific record categories being attempted. However, on average, hundreds of world records are broken each year across various sports and activities.
Wikipedia lists 32 new World Records from the 2012 Olympics see related link for the actual new records