Demographics of the world
According to the CIA - The World Factbook, the country with the highest birth rate currently is Niger at 51.26 births per 1000 people. The country with the lowest birth rate is Japan at 7.64 births per 1000 people. Hong Kong, a Special Administrative Region of China, is at 7.42 births per 1000 people. As compared to the 1950s, birth rate was at 36 births per 1000 in the 1950s, birth rate has declined by 16 births per 1000 people. In July 2011, the U.S. National Institutes of Health announced that the adolescent birth rate continues to decline.
Social issue
Germany has one of the lowest birth rates in the world. In 2012, its national fertility rate was 1.41 children per woman, up slightly from the 2002 rate (1.31), but still well below the replacement rate of 2.1 children per woman. (By contrast, the United States had a fertility rate of 2.06 in 2012). At the same time, Germans are living longer, with a life expectancy of 80.19 years (77.93 years for men and 82.58 years for women) – 2012 estimates. This demographic shift is already straining the country's social welfare structures and will produce further economic and social problems in the future.
The Mikrozensus done in 2008 revealed that the number of children a German women aged 40 to 75 had was closely linked to her educational achievement.