The data on population of the southern part of India and the total population of India during the 50 years from 1951 is given below
Population in crores (10 million)
|Total – Southern India||9.44||11.06||13.58||16.51||19.73||22.43|
|Total – India||36.11||43.92||54.82||68.33||84.62||102.87|
|Share of Southern India in the total||26.14||25.18||24.77||24.16||23.31||21.80|
The above table shows that in 50 years since 1951, the share of the population of southern 4 states and Pondicherry declined by 4.34% from 26.14% to 21.80%. The decline in the share has steadily been increasing since 1961. It will not be surprising if the 2011 census figures show a decline of as much as 2%. If the trend continues, which is likely, in the next 50 years, the population of the southern states could much go below 15% (if there is not large scale migration from northern states to southern states) leading to marginalization of the southern states in Indian politics (though not in the economy).