Human Fertility Database

The Human Fertility Database (HFD) is a high-quality source of fertility-related data maintained by the Max Planck Institute for Demographic Research. It uses only government-collected data, including census data and records of births and deaths. Because of the high standards, data is limited to a few countries. It generally correlates well with the more widely available UN/Gapminder data, but on occasions where there are discrepancies (such as the 1966 anomaly for fertility in Japan) the HFD data is likely to be more reliable.