This is alot more Complicated. The Bureau of Engraving and Printing (BEP)
prints notes that last as long as possible.
Notes are made to last about 3 to 7 years. Notes used everyday, like a $1 bill, will exchange many hands, more times than a 20 dollar bill.
To get an older dated note, you have to get one that was saved by a person. Maybe as a collectible, maybe as a gift stored in an envelope.
If you really tried to find a 1963 $5 note from any Federal Bank, that task would be nearly impossible.
If you were to try and find a 2000 note, it may take you a few months but you MIGHT find one!
Right now they are replacing 2004 notes everyday.
Older notes will become harder to find!
There are 12 Federal banks that issue notes. A set of notes with a specifice year is collectible.
So there is a Market for all notes issued by 12 Federal Banks. This makes saving some NON-STAR Notes a very desired collection. (it also saves money)
Each Federal bank has their notes printed designated by the Letter in the seal.
