i am pretty shore that this year (2012) was the 30th
21 so far
10
1 trillion tickets have been sold so far, according to the bbc.
There have been 30 Olympiads so far. Book it.
there has been 27 Olympics so far.
four
60 olympics held so far
Total of 44 new world records were set at the 2012 Olympics.
everywhere
21
497 in the summer Olympics so far.
unknown