Read the following case study carefully and answer the questions 21 to 24 on the basis of the same :-The most heated and debated topic not only in India but in entire world is to eradicate extreme poverty by 2030. Poverty is a socio-economic incident and it is closely related with disparity. Due to poverty, it becomes close to impossible to fulfill even the bare requirements of life viz; food, clothing,shelter, education and health in deprive section of society. From 1993-94 to 2011-12, national poverty estimates is reduced from 50.1% to 25.7% in rural areas on the contrary in urban areas, its rate of reduction is from 311.8% to 13.7% . In India, poverty rate is declined by 17.89% from 1993 to 2004 and further declined by 41.13% in a period of 2004-2011 (as per Tendulkar Committee estimates). Asper SDG India Index Baseline report 2018, 21.92% of India’s population was below poverty line in 2011. With an above backdrop, we focuses on the poverty alleviation programmes in India with special regard to Sustainable Development Goals. 21. When the number of poor is estimated as the proportion of people below the poverty line, it is known as ______________. *