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He was the 35th President from 1961 to 1963
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He was the 36th President from 1963 to 1969
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He was the 37th President from 1969 to 1974
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He was the 38th President from 1974 to 1977
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He was the 39th President from 1977 to 1981
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He was the 40th President from 1981 to 1989
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He was the 41st President from 1989 to 1993
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He was the 42nd President from 1993 to 2001
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He was the 43rd President from 2001 to 2009
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He was the 44th President from 2009 to 2017
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He is the 45th President from 2017 to Present