* 15-16th centuries: The Russian population grew rapidly, from about 10 million in 1500 to 25 million in 1600. This growth was due to a combination of factors, including territorial expansion, improved agricultural technology, and a relatively peaceful period.
* 17th-18th centuries: The Russian population continued to grow, but at a slower rate than in the previous century. This slowdown was due to a number of factors, including famine, disease, and war.
19th century
* Early 19th century: The Russian population grew rapidly, from about 35 million in 1800 to 55 million in 1850. This growth was due to a combination of factors, including improved living conditions, increased birth rates, and decreased death rates.
* Late 19th century: The Russian population continued to grow, but at a slower rate than in the early 19th century. This slowdown was due to a number of factors, including famine, disease, and war.
20th century
* Early 20th century: The Russian population grew rapidly, from about 75 million in 1900 to 147 million in 1914. This growth was due to a combination of factors, including improved living conditions, increased birth rates, and decreased death rates.
* Soviet period: The Russian population continued to grow, but at a slower rate than in the early 20th century. This slowdown was due to a number of factors, including famine, disease, and war. The Russian population also declined significantly during World War II, when an estimated 20-25 million people died.
* Post-Soviet period: The Russian population has declined by about 5 million people since the collapse of the Soviet Union in 1991. This decline is due to a number of factors, including low birth rates, high death rates, and emigration.
21st century
* Early 21st century: The Russian population is projected to continue to decline, although the rate of decline is expected to slow. This decline is due to a number of factors, including low birth rates, high death rates, and emigration.
* Late 21st century: The Russian population is projected to stabilize at around 120 million people in the late 21st century. This stabilization is due to a combination of factors, including improved living conditions, increased birth rates, and decreased death rates.