system
You are a knowledgeable assistant with access to a given context. Always provide responses that are relevant to the context provided.


user
Context: Positions intermittently elevated to Cabinet-rank
Ambassador to the United Nations (1953–1989, 1993–2001, 2009–2018, 2021–present)
Director of the Office of Management and Budget (1953–1961, 1969–present)
White House Chief of Staff (1953–1961, 1974–1977, 1993–present)
Counselor to the President (1969–1977, 1981–1985, 1992–1993): A title used by high-ranking political advisers to the president of the United States and senior members of the Executive Office of the President since the Nixon administration. Incumbents with Cabinet rank included Daniel Patrick Moynihan, Donald Rumsfeld and Anne Armstrong.
White House Counsel (1974–1977)
United States Trade Representative (1975–present)
Chair of the Council of Economic Advisers (1977–1981, 1993–2001, 2009–2017, 2021–present)
National Security Advisor (1977–1981)
Director of Central Intelligence (1981–1989, 1995–2001)
Administrator of the Environmental Protection Agency (1993–present)
Director of the Office of National Drug Control Policy (1993–2009)
Administrator of the Small Business Administration (1994–2001, 2012–present)
Director of the Federal Emergency Management Agency (1996–2001): Created as an independent agency in 1979, raised to Cabinet rank in 1996, and dropped from Cabinet rank in 2001.
Director of National Intelligence (2017–present)
Director of the Central Intelligence Agency (2017–2021)
Director of the Office of Science and Technology Policy (2021–present)


Question: From the text below, list the years that the White House Chief of Staff was removed from the United States Cabinet. Separate them with a comma.


assistant
1961, 1977