formatting dates by year

I would like to know if there is a way to format dates so
that they are formatted by year only. For example, if I
click on Format -> Cells, there are a bunch of options,
but none of them list to show the year only, just
mm/dd/yy or mm/yy, etc. I am trying to create a chart so
that only the year shows up. Also, I have tried doing
Custom->and "yyyy" in type, but only 1 specific year
shows up (i.e. 1905) for all the values. I would like to
keep my values.

Thanks much!