Which country is expected to see approximately 100% growth in its population aged 65 and older?

The Russian Federation is expected to see significant growth in its population aged 65 and older due to a combination of factors including an aging population, improvements in healthcare, and higher life expectancy. These elements contribute to a demographic shift where a larger percentage of the total population is composed of older individuals. This trend reflects broader global patterns but is particularly pronounced in Russia, where post-Soviet social and economic changes have led to increasing longevity.

In contrast, while Brazil, China, and India are facing their own demographic transitions, the rates and contexts of aging populations differ. For example, China's population is also aging rapidly due to the one-child policy's long-term effects and significant healthcare advancements, but demographic forecasts indicate that the growth rate for those 65 and older may not reach the same level as projected for Russia. Similarly, India's burgeoning youth population significantly influences its demographic profile, leading to slower growth in older age brackets relative to the overall population. Brazil's aging process is present, but it does not exhibit the same growth in the senior population segment as seen in Russia.