how many premium processing cases were filed this year i.e FY2015

How many cases under premium processing were filed this year. Out of 85k if 30 or 40k were premium and are approved till May 12 then the chances are regular processing cases won’t take long for the rest i.e 85k -40k = 45k

Less than 10-15% of all applications get filed under Premium Processing…
Your assumption of 30-40K PP applications is a grossly overestimated figure.
Please refer the “H1B Tracker” page for more accurage percentage…