How to display preceeding months data in following months

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How to display preceeding months data in following months

How to display 1st month of data(all rows- not count) in 2nd month(Inclusive of 2nd month rows) and in 3rd month (1st+2nd+3rd) ...and so on till the current date...

1st Month could be any date starting 2010.

Eg: Jan'10--> 2 rows

      Feb'10-->1 rows ( than it will display 3 rows, 2 rows from Jan'10 and 1 itself)

      Mar'10-->1 rows( it should display 4 rows, 2 from Jan ,1 from feb and 1 itslef)

...............

 

Thanks

GA