Blue = Aspartame
Equal is very interesting. The underlying icons, although upgraded here and there, seem to have stayed much the same throughout it's existence. I mean things like the strawberry. or the tray with glasses.
 

This is the first brand using version numbers for packaging.

 

USA

 

Hong Kong

 

 

USA USA USA USA USA USA
     
     

 

USA USA USA
   

 

 

Under Construction