When Elaine received the life insurance proceeds of $250,000 from Jerry's death, she asked a broker to help her manage the money. Her broker, John, placed her funds in an investment account over which he has full discretion. John's record regarding Elaine's investment portfolio over the last five years is as follows. Load-adjusted: 2015(10.0);  2016-?;2017 (8.5); 2018 12.0 ; 2019 3.0   Elaine did not have the information for 2016 and has been unable to obtain it total return from John.

 

Question:

1) What was the rate of return on Elaine's investment portfolio in 2016?