affected over time by various demographic changes. It is shown that a proportional decline in fertility and death rates has … rise to an increase in per capita savings. Finally, a fertility rate reduction which leaves unaffected the rate of …

mortality rates fell, populations began to soar. In most countries, this growth led to falling fertility rates. Although … fertility has fallen, the population continues to increase because of population momentum; it will eventually level off. In the …

, despite the extensive spread of the virus, the mortality toll remains highly concentrated in high-income countries. Developing …