We start our list with Canada, only North American country on the list. Three largest religious groups in Canada – Christians, Muslims, and Unaffiliated – will record growth in the next forty years. Although the number of Christians will go up by one million in the next three decades, they will account for a smaller percent of the total population in 2050 than they did in 2010. Six years ago Christians constituted 69% of the country’s population, and in 2050 the percentage will drop to 60. The population of Muslims and Unaffiliated will grow at faster rates in the future compared to Christians. In 2010 Muslim community had 710.000 members (2.1%). Forty years later their number will be 2.26 million (5.5%), which is a 218% rise – largest increase among all religious groups.