. >> david rotter with "reuters." i wonder if you could talk about the current fiscal year, the deficit forecast is now above $1 trillion, versus below $1 trillion in your august forecast. can you explain what the difference is there? part of the payroll taxes for a couple of months? >> yes. there's, those who want to check later, there's a table on pages 98 and 99 that decomposes the revisions to our budget projections for each of the coming 11 years. for 2012 there are a number of factors. rt of the payroll tax cut for january and february of this year. that was not built in our august projections. an important part of it is disappointingly low corporate tax receipts. it's a little puzzling. it does not seem to be a shortfall in corporate profits as measured in the national income accounts relative to what we were expecting. rather it's a shortfall on the tax receipts that have been collected. essentially a decline we weren't predicting in the average tax rate essentially. that ends up in the corporate tax code, not