What is the population growth rate and from which decade Indian population growth rate started to decrease and Why?

Population growth is the increase in the number of individuals in a population. The "population growth rate" is the rate at which the number of individuals in a population has been increased in a given time period, and the rate is expressed infraction to the initial population. The population growth rate refers to the change in population over a unit time period, often expressed as a percentage of the number of individuals in the population at the beginning of that period. A positive growth rate indicates there is an increase in the individuals compared to the initial population. If the population growth is negative, then there is a decrease in the number of individuals, and when the growth rate is zero, then there will be no increase or decrease in the number of individuals.

From 1981 onwards, India's population is rising consistently, but the growth rate of population has been falling. According to census 2011 average annual growth rate of population was 1.64 percent in 2011. The average annual growth rate was 2.16 in 1991 and 1.97 in 2001. But in its absolute size, the population continues to rise. From 1981 to 201153 crore people were added to the country’s population. This period is the period of the declining trend in population.