After logging in, select the date of the statement you wish to view from the list on the right of your screen.
 
You also have the ability to save your eStatements on your computer indefinitely. After logging on to view your statement click on Printable Version. This will open a new window with a printable version.  Click File, then Save As. The copy is saved locally on your PC, so you can access it without needing to log on.