13
20
12
8
The Federated States of Micronesia has had 7 presidents since 1979.
64
As of May, 2012 there have been 11 U. S. Presidents since Harry Truman.
44
Including the one in office in 1920 and up to and including Barack Obama, there have been 17 U.S. Presidents.
It has been 66 years from 1946 to 2011 :)
There has been only two democratic presidents elected since Ronald Reagan, they are Bill Clinton and Barack Obama.
23
The NHL has had 6 presidents/commissioners since its formation in 1917: 1. Frank Calder, 1917-1943 2. Mervyn "Red" Dutton, 1943-1946 3. Clarence Campbell, 1946-1977 4. John Ziegler, 1977-1992 5. Gil Stein, 1992-1993 6. Gary Bettman, 1993-present