There is a lack of systematic quantitative information about the social and economic situation of Bhutan for the 1970s. The baselines for historical comparison available today were first collected in 1985 – the year when time series data was collected. Some information that date back to 1974 indicate the low base of infrastructure that existed at that time. There were 11 ill-equipped hospitals, manned mostly by foreign doctors, and 45 basic health units in 1974, the year Jigme Singye's coronation was held.