What was the birth rate in the world war 2?

During World War II, birth rates in many countries significantly declined due to the war's economic and social disruptions, as well as the mobilization of men for military service. In several nations, particularly in Europe, the Birth Rate dropped sharply as families delayed having children or faced hardships. After the war, many countries experienced a "baby boom," as returning soldiers and stabilizing economies led to a surge in births. Overall, the impact of the war on demographic patterns was profound, affecting birth rates for years to come.