investment	Arithmetic Average Return	standard deviation
canadian common stock	10.5	16.32
U.S common stock	11.99	16.46
Long bond	8.30	9.50
small bond	12.04	25.49
TSX venture stock	5.25	40.40
Inflation	3.65	3.03
Tresury bill	5.49	3.91

What is the historical real return on FTSE TMX Canada long-term bonds? (Do not round intermediate calculations. Round the final answer to 2 decimal places.)

Real return ?