According to the World Bank, India accounted for the world's largest number of poor people in 2012 using revised methodology to measure poverty, reflecting its massive population. However, in terms of percentage, it scored somewhat lower than other countries holding large poor populations. In July 2018, World Poverty Clock, a Vienna-based think tank, reported that a minimal 5.3% or 70.6 million Indians lived in extreme poverty compared to 44% or 87 million Nigerians. In 2019, Nigeria and Congo surpassed India in terms of total population earning below $1.9 a day. Although India is expected to meet the United Nations' Sustainable Development Goals on extreme poverty in due time, a very large share of its population lives on less than $3.2 a day, putting India's economy safely into the category of lower middle income economies.