Here is a look at Elizabeth II by the numbers:
April 21, 1926: Date of birth
25: Age she became queen
63: Years as British monarch
1945: Elizabeth learns how to drive.
November 20, 1947: Elizabeth II marries His Royal Highness The Prince Philip, Duke of Edinburgh.
1953: Elizabeth II attends her first football match (FA Cup Final).
40: Queen Elizabeth II is the 40th monarch since William the Conqueror received the crown of England.
4: Number of children (Prince Charles, Princess Anne, Prince Andrew and Prince Edward)
8: Number of grandchildren (Peter and Zara Phillips, Prince William and Prince Henry of Wales, Princess Beatrice of York and Princess Eugenie of York, The Lady Louise Windsor and Viscount Severn)
Over 600: Number of patronages
5: Official visits to the United States
12: Number of prime ministers
Over 3.5 million: Items of correspondence Elizabeth II has answered
More than 30: Number of corgis Elizabeth II has owned during her reign. First dog was named Susan.