India's exports grew by a mere 3.2 per cent year-on-year to 24.4 billion US dollar in April 2012 mainly due to demand slowdown in western markets like Europe.Exports stood at 23.6 billion US dollar in April last year, according to data released by the Commerce Ministry today.Imports during the first month of the current fiscal grew 3.8 per cent to 37.9 billion US dollar, leaving a trade deficit of 13.4 billion US dollar.The sectors which registered healthy export growth in April include engineering, electronics, pharmaceuticals and chemicals.