Over a 42-year period an asset had an arithmetic return of 11.7 percent and a geometric return of 9.6 percent Using Blume's formula, what is your best estimate of the future annual returns over 6 years? 11 years? 21 years? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Future annual returns 6 years 11 years 21 years