Passage: In 1973, she joined the faculty at Barnard College. In 1987 she was selected by the Association for Women in Mathematics to be a Noether Lecturer; this lecture honors women who have made fundamental and sustained contributions to the mathematical sciences.  She was a visiting scholar at the Institute for Advanced Study in the summer of 1988. She has also been a Sloan Foundation Fellow (1974–76) and a Guggenheim Foundation Fellow (1994–95). In 1996, she won the Chauvenet Prize. Then in 2005, she won the New York City Mayor's Award for Excellence in Science and Technology.In 2012, she became a fellow of the American Mathematical Society. She supervised 21 doctoral students, and has a total of 50 academic descendants. Her doctoral students include Józef Przytycki.In 2017, she endowed the Joan and Joseph Birman Fellowship for Women Scholars at the American Mathematical Society to support mathematical research by mid-career women.

Question: When was she awarded the Guggenheim Foundation Fellowship?
1994–95