How many times was the Statue of Liberty closed after 911?

After the 911 attacks, the federal government closed the Statue of Liberty National Monument. Allowing people inside would be unsafe, because rescuers might not be able to get them out in an emergency.
    Three years later in 2004 the base of the statue was reopened after $6.7 million in improvements to fire and security systems. Five years after that, in 2009, the crown — and the 146 narrow steps to it — reopened on the Fourth of July.
    Now the statue has been closed again.
    Interior Secretary Ken Salazar says it needs a $27.25 million renovation for additional safety improvements. Stairways, elevators and bathrooms will be upgraded as well as electrical and fire suppression systems. Officials said the work is expected to take a year.
    David Luchsinger, the superintendent of the statue said that the vast majority of visitors do not bother with the climb inside the statue. (10) Tourists are going to get the exact same experience because Liberty Island will remain open while the work is going on.
                                                                    NPR News