In India despite the decline in growth rate, the number of people being added every decade is steadily increasing. Why?

From 1951 to 1981, the annual rate of population growth was steadily increasing. This population growth was responsible for rapid increase in population from 361 million in 1951 to 683.3 million in 1981. However, since 1981, the rate of growth declined to 2.14 in 1991 and 1.93 in 2001. But the population increased to 846.4 million in 1991 and 1028.7 million in 2001.Despite the decline in growth rate, the number of people being added every decade has increased because India has a very large population. And when a low annual rate is applied to a very large population, it results in a large absolute increase. Thus, in India too the total
number being added every decade is steadily increasing.