India has a population of over 1.21 billion people as of 2010, making it the second most populous country in the world. The population is young, with 64.9% of people between the ages of 15-64. Literacy rates have increased but are still only 74% overall. The major religions are Hinduism and Islam. While the female sex ratio has improved slightly in recent decades, it remains unbalanced. Most Indians work in agriculture, but employment is growing fastest in the services sector. Income levels remain low, with per capita income of only around $1,200 USD.