狂刃贺岁新版专题

Total population is the most fundamental demographic indicator, serving as the baseline for market size, labor force, and economic potential assessment. India surpassed China as the world's most populous country in 2023 at ~1.44 billion, while China began its first population decline in 2022. Sub-Saharan Africa maintains high growth rates, with Nigeria projected to become the third largest by 2050. Japan's population continues declining at ~124 million. Always examine age structure alongside total figures.