Each year Ibbotson updates its equity risk premium statistics including the equity risk premium for micro-cap companies, also referred to as the 10the decile, and these are usually published annually in the Stocks, Bonds, Bills, and Inflation Valuation Yearbook (SBBI).Academic researchers in the field of finance use this statistic. What is the most recently updated - should be for the year 2020  micro-cap equity/10the decile equity risk premium determined by Ibbotson?