T-SQL Group by problem

Count	Date	Row
10	1/1/2013	1
10	1/2/2013	2
10	1/3/2013	3

Sum Date
10  1/1/2013
20  1/2/2013
30  1/3/2013

declare @count int
declare @i int
set @i = 1
set @count = (select max(Row) from #test) -- equals to 3

while @i <= @count
begin
	select sum(Count) as SumCount
		, Date
	from #test
	where row between 1 and @i
	group by Date
	set @i = @i + 1
end

SumCount   Date
10	   1/1/2013
10	   1/2/2013
10	   1/3/2013