No FILEGROWTH shown

Hi, 

I've written a small procedure to show how often a database is growing over the course of a day. 

This works fine on some databases in the instance but returns nothing for others, I'm assuming that as the procedure uses  the default trace file there has not been any FILEGROWTH changes for that database over the period logged in the .TRC file. 

If that's true then is it possible to force a database to grow by a small amount so that I can see the DDL it's being logged? Also, can this forcing the database to grow be done online?

This is the code snippet: 

	SELECT 
	   @path = REVERSE(SUBSTRING(REVERSE([path]), 
	   CHARINDEX('\', REVERSE([path])), 260)) + N'log.trc'
	FROM    
		sys.traces
	WHERE   
		is_default = 1;

	SELECT 
		DatabaseName, 
		CAST(StartTime AS DATE) AS [Date], 
		COUNT(1) AS [ExtentsPerDay],
		FileType = CASE EventClass WHEN 92 THEN 'Data' WHEN 93 THEN 'Log' END
	FROM 
		sys.fn_trace_gettable(@path, DEFAULT)
	WHERE
	   EventClass IN (92,93) AND DatabaseName = @Database

	   AND 
	   	(
			@Type IS NULL OR (UPPER(@Type) = 'DATA' AND EventClass  = 92)
			OR 
			@Type IS NULL OR (UPPER(@Type) = 'LOG' AND EventClass  = 93)
		)