 Of the one billion Hindus in India, it is estimated that Hindu Forward caste comprises 26%, Other Backward Class comprises 43%, Hindu Scheduled Castes (Dalits) comprises 22% and Hindu Scheduled Tribes (Adivasis) comprises 9%.In addition to taking affirmative action for people of schedule castes and scheduled tribes, India has expanded its effort to include people from poor, backward castes in its economic and social mainstream.In 1990, the government reservation of 27% for Backward Classes on the basis of the Mandal Commission's recommendations.