The 7000 unemployed pilots is one of the biggest rumours that has been floating around in Indian Aviation
The DGCA from Jan 2004 to Dec 2014 issued only 9064 Pilot licenses . If 7000 were unemployed then that means only 2000 Pilots are employed .
Air India alone has 1500 something pilots . Jet Airways has another 1500 . IndiGo is also 1000+ ( actually I believe the numbers are closer 1500 )
A more accurate number of unemployed would be to find out how many apply for mass airline exams like Jet , IndiGo , Air India etc
Jet 2013 and 2014 has 3000+ roll numbers issued . IndiGo JFO 2015 had 2500+ roll numbers issued
For Air India its slightly less than 3000 roll numbers issued ( although i could be wrong about that one since I dont think my numbers for Mumbai are accurate... )