How much one can live? How much one can see? How much one can enjoy?
England's Queen Elizabeth II, coronated as the Queen of the United Kingdom, Canada, Australia, New Zealand, South Africa, Ceylon and Pakistan, then aged 26, on February 6, 1952, is one like that, and now it 2012 (60 years - so now she is 86 years old).
lest us see how many presidents of US she has seen -

Barack Obama, 44th President  -  2009-2012  -  4 years

George W Bush, 43rd President  -  2001-2009  -  8 years

Bill Clinton,  42nd President  -  1993-2001  -  8 years

George H W Bush (Sr),  41st President,  1989-1993  -  4 years

Ronald Reagan,  40th President  -  1981-1989  -  8 years

Jimmy Carter,  39th President  -  1977-1981  -  4 years

Gerald Ford,  38th President  -  1974-1977  -  4 years

Richard Nixon,  37th President  -  1969-1974  -  5 years

Lyndon B Johnson,  36th President  -  1963-1969  -  6 years

John F Kennedy,  35th President  -  1961-1963 (assassinated)  -  2 years

Dwight D Eisenhower,  34th President  -  1953-1961  -  8 years

Harry S Truman,  33rd President  -  1945-1953  -  8 years