1950 to mid-1970s: Income poverty reduction shows no discernible trend. In 1951, 47% of India's rural population was below the poverty line. The proportion went up to 64% in 1954-55; it came down to 45% in 1960-61 but in 1977-78, it went up again to 51%.
Mid-1970s to 1990: Income poverty declined significantly between the mid-1970s and the end of the 1980s. The decline was more pronounced between 1977-78 and 1986-87, with rural income poverty declining from 51% to 39%. It went down further to 34% by 1989-90. Urban income poverty went down from 41% in 1977-78 to 34% in 1986-87, and further to 33% in 1989-90.
After 1991: This post-economic reform period evidenced both setbacks and progress. Rural income poverty increased from 34% in 1989-90 to 43% in 1992 and then fell to 37% in 1993-94. Urban income poverty went up from 33.4% in 1989-90 to 33.7% in 1992 and declined to 32% in 1993-94 Also, NSS data for 1994-95 to 1998 show little or no poverty reduction, so that the evidence till 1999-2000 was that poverty, particularly rural poverty, had increased post-reform. However, the official estimate of poverty for 1999-2000 was 26.1%, a dramatic decline that led to much debate and analysis. This was because for this year the NSS had adopted a new survey methodology that led to both higher estimated mean consumption and also an estimated distribution that was more equal than in past NSS surveys. The latest NSS survey for 2004-05 is fully comparable to the surveys before 1999-2000 and shows poverty at 28.3% in rural areas, 25.7% in urban areas and 27.5% for the country as a whole, using Uniform Recall Period Consumption. The corresponding figures using the Mixed Recall Period Consumption method was 21.8%, 21.7% and 21.8% respectively. Thus, poverty has declined after 1998, although it is still being debated whether there was any significant poverty reduction between 1989-90 and 1999-00. The latest NSS survey was so designed as to also give estimates roughly, but not fully, comparable to the 1999-2000 survey. These suggest that most of the decline in rural poverty over the period during 1993-94 to 2004-05 actually occurred after 1999-2000.