SELECT TOP 10
    [Average Time Blocked] = (total_elapsed_time - total_worker_time) / qs.execution_count,
    [Total Time Blocked] = total_elapsed_time - total_worker_time,
    [Execution count] = qs.execution_count,
    [Individual Query] = SUBSTRING (qt.text,qs.statement_start_offset/2,
        (CASE
        WHEN qs.statement_end_offset = -1 THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
        ELSE qs.statement_end_offset
        END - qs.statement_start_offset)/2),
    [Parent Query] = qt.text,
    [DatabaseName] = DB_NAME(qt.dbid)
FROM sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
ORDER BY [Average Time Blocked] DESC;