In 1973, the average Libyan woman had 7.6 children and married at the age of 19.
It takes a live birth rate of 2.1 children per woman to maintain a stable population. Birth rates across Southern Europe have plunged below 1.5, and are expected to drop even further as Euro Zone economies continue to contract. Hong Kong, Singapore, Taiwan, and Japan are converging on birth rates closer to 1.0, literally halving their population each generation. Even the Black Plague didn’t do that.