What are the benefits to india's economy expected to be as its dependency ratio begins to fall in future decades

In the near future India will be the largest individual contributor to the global demographic transition. Demographic wise in 2025 India will surpass China as the world's largest country according to the U.S Census Bureau predicts. The continuing demographic divided of India will add 2 percentage points per annum to India's per capita GDP growth. This to shows that India in the next two decades will be having an economic struggle as the population arises in the future.