New Delhi/ Nagpur, Nov 07 (ANI): The Rashtriya Swayamsevak Sangh (RSS) urged the government to revise its population control policy in wake of the 'expanding number' of Muslims and Christians in the country. RSS leader Alok Joshi outlined the reasons for exponential growth of the two communities and asked the government to implement the policy effectively. Hindus have dropped below 80 percent of the population for the first time since independence, data showed. The RSS expressed growing concern about it. The census data shows that Hindus declined to 79.8 percent of the country's 1.2 billion people in 2011, from 80.5 percent a decade earlier. The share of Muslims rose to 14.2 percent from 13.4 percent in 2001 - the only major religious group to record a rise. Christians stayed at 2.3 percent and Sikhs fell to 1.7 percent from 1.9 percent.