When John F. Kennedy was inaugurated in January 1961, the estimated U.S. population was around 180 million. As of 2023, the U.S. population is approximately 333 million. This represents an increase of about 153 million people over the span of six decades.
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Too few. Since John F. Kennedy was inaugurated as President in January 1961, and was assassinated in November 1963, it works out to 34 months as President, approximately.
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In the US, "The Kennedys" are generally considered to be the people who are descended from Joseph Kennedy and his wife, Rose. These include John F. Kennedy, Robert Kennedy and their children, etc. There are many people who have the Kennedy surname who are not members of "The Kennedys."
Too many to list...
roughly 1500
The Kennedy Space Center attracts around 1.5 million visitors annually.
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I do not know which Kennedy you are asking about-- there are many people with the name "Kennedy." However, a "psycho" usually refers to a crazed person or a killer (a psychopath). I am not sure any of the Kennedys that I know about fit that description.
Overwhelming numbers of people from many countries as well as many world countries.
20.
Around 1.7 million people visit the Kennedy Space Center each year, making it one of Florida's most popular tourist attractions.