The conversation between human and AI assistant.
[|Human|] From the passage identify the years in which major events happened in Icahnâs business career. Display the results in comma separated format.
[|AI|] 1961, 1963,1968, 1978, 1983, 1985, 1986, 1988, 1987, 1991
[|Human|] 
From the passage identify the years in which major events happened in Icahnâs business career. Display the results in comma separated format.