1921 is called the Year of the Great Divide in the demographic history of India. PRIOR to 1921, the POPULATION was quite unstable. It kept on increasing and DECREASING WITHOUT any pattern.After 1921, the population showed a consistent increase.The total increase in population was 5.9% between 1901 and 1911. The total decrease in population was 0.39% between 1911 and 1921.But after, 1921 it has shown an increased pattern only.