This information was given by Minister of State for Civil Aviation Shri Jayant Sinha in a written reply to a question in the Rajya Sabha today
अणुऊर्जा आणि अंतराळ राज्यमंत्री डॉ. जितेंद्र सिंह यांनी आज राज्यसभेत लेखी उत्तरात ही माहिती दिली