Well that going to depend on what date you are searching one. Myself I just use the release date on the first edit form. It has a drop down form to enter day month year, but I just use the year.

I tried just using the year in the search but that didn't work. I found that you had to enter the year as 00/00/1960 for example.

So a search entered as:
Release Date occurs on or after 00/00/1960 AND Release Date occurs before 00/00/1970

works... for the 1960's (unless of course you consider the to be from 1961 thru 1970 as some do)

fred