What is the current state of religious minorities, non religious, atheists, spirituals, agnostis and secularists people of mauritius?

Mauritius is a religiously diverse nation, with Hinduism being the most widely professed faith.The people of Indian descent (Indo-Mauritian) follow mostly Hinduism and Islam. The Franco-Mauritians, Creoles and Sino-Mauritians follow Christianity. A minority of Sino-Mauritians also follow Buddhism and other Chinese-related religions. According to the 2011 census made by Statistics Mauritius, Hinduism is the major religion at 48.54%, followed by Christianity at 32.71% (with Catholicism as the largest Christian denomination at 26.26 %, followed by Islam 17.30% and Buddhism 0.18% in terms of number of adherents.

According to the 2011 census conducted by Statistics Mauritius, 48.5% of the Mauritian population follows Hinduism, mostly Biharis with Tamil, Telugu and Marathi minorities, followed by Christianity (32.7%), Islam (17.2%) and other religions (0.7%). 0.7% reported themselves as non-religious and 0.1% did not answer.Mauritius is the only country in Africa to have a Hindu plurality.

An officially secular state, Mauritius is a religiously diverse nation, with freedom of religion being enshrined as a constitutional right.. The culture of the Mauritian people is reflected in the various religious festivities that are celebrated throughout the year, some of which are recognised as public holidays.

Why is "Biharis" and Marathi clan mentioned in a statistic study?