The 30 year T Bond was introduced in 1977.
Record Daily Volume in the 30 year T Bond Futures on the CBOT occured on 8/27 at 1,121,634 contracts changing hands. Average daily volume is about 200,000 per day.
Record Open Interest was 1,138,994 on July 6th, 1998 for the 30 year. The current open interest is 368,927
Record Daily Volume in the 10 year T Bond Futures on the CBOT occured on 5/28 at 1,241,076 contracts changing hands. Average daily volume is about 550,000 per day.