After the deposition of Mossadegh in 1953, the reign of shah Mohammad Reza Pahlavi was the most prosperous era for the Jews of Iran. In the 1970s, only 1% of Iranian Jews were classified as lower class; 80% were middle class and 10% wealthy. Although Jews accounted for only a small percentage of Iran's population, in 1979 two of the 18 members of the Iranian Academy of Sciences, 80 of the 4,000 university lecturers, and 600 of the 10,000 physicians in Iran were Jews.