The total number till end of 2010 is difficult to calculate without the recent 485 pending inventory. For Eb2 at least the multiplier of 2.0 will not be applicable as we kind of know the numbers til April 2010 (though we have no clue of current upto date numbers). If we had recent 485 bulletins we could take the numbers for EB2 and EB3 as is from the inventory and then added the multiplier to the petitions for the rest of the year. But 50K total for EB2+EB3 without knowledge of duplicates or abandoned petitions is a good start. For EB3, I would be surprised if we had anything more than 15K till the end of Dec 2010 (without accounting for the potential downporting).