MySQL Finding index size for compound unique indexes

I'm using following query to get index and data sizes for tables in database. But unfortunately it doesn't show index size for compound unique indexes. How can i get index sizes for compound unique indexes? Here is my query; SELECT TABLE_NAME AS "Table", TABLE_ROWS AS "Rows", CONCAT((FORMAT((DATA_LENGTH) / POWER(1024,2),2)), ' Mb') AS "Data Size", CONCAT((FORMAT((INDEX_LENGTH) / POWER(1024,2),2)), ' Mb') AS "Index Size", CONCAT((FORMAT((DATA_LENGTH+ INDEX_LENGTH) / POWER(1024,2),2)), ' Mb') AS "Total Size", TRIM(TRAILING ', ' FROM CONCAT_WS(', ', ENGINE, TABLE_COLLATION, CREATE_OPTIONS)) AS "Type" FROM information_schema.TABLES WHERE information_schema.TABLES.table_schema = "my_database_name_here"