The telecom industry in India has grown rapidly over the past few decades. Major factors contributing to India's growth as a leading telecom market include the entry of private operators in the 1990s, which increased competition. As of 2012, India had nearly 1 billion telephone users and a tele-density of around 80%. The mobile market in particular has seen tremendous growth, with over 900 million subscribers. However, challenges remain such as limited infrastructure in rural areas and declining average revenue per user. The industry is expected to generate over $100 billion in revenue by 2015 and create millions of new jobs.