<P> India has a fast - growing medical tourism sector of its health care economy, offering low - cost health services and long - term care . In October 2015, the medical tourism sector was estimated to be worth US $3 billion . It is projected to grow to $7--8 billion by 2020 . In 2014, 184,298 foreign patients traveled to India to seek medical treatment . </P> <P> India's healthcare sector is expected to grow at a CAGR of 29% between 2015 and 2020, to reach US $280 billion, buoyed by rising incomes, greater health awareness, increased precedence of lifestyle diseases, and improved access to health insurance . </P> <P> The telecommunication sector generated ₹ 2.20 lakh crore (US $34 billion) in revenue in 2014--15, accounting for 1.94% of total GDP . India is the second - largest market in the world by number of telephone users (both fixed and mobile phones) with 1.053 billion subscribers as of 31 August 2016 . It has one of the lowest call - tariffs in the world, due to fierce competition among telecom operators . India has the world's third - largest Internet user - base . As of 31 March 2016, there were 342.65 million Internet subscribers in the country . </P> <P> Industry estimates indicate that there are over 554 million TV consumers in India as of 2012 . India is the largest direct - to - home (DTH) television market in the world by number of subscribers . As of May 2016, there were 84.80 million DTH subscribers in the country . </P>

India is the largest producer of which of the following products