In fact, the census year 1921 registered a negative growth rate of-0.31 per cent which happened only once throughout the demographic history of India. It is because of this decline in place of rise in population that the year 1921 is called the ‘demographic divide’ in the demographic history of India. (i) The trend growth rate of India's GDP since 1950-51 shows no perceptible variation and it has been growing at a constant rate of about 3.5 per cent per annum. (ii) There has been a trend acceleration in the GDP growth rate over the entire period since 1950-51. (iii) A distinct break is discernible in GDP at 1975-76/1979-80 with a higher trend This adversely affects the growth rate of the economy. In India, annual growth rate of population is 1.8 percent and capital output ratio is 4:1. It means that in order to stabilize the existing economic growth rate (4 X 1.8) = 7.2 percent of national income must be invested.