This has probably been discussed before, and maybe I'm dense for asking. It could even be mentioned in the books, but I've missed it.

The question is...The year date of the dolls
is that for the year they were 'born' or the year that they are 10.?
Like say, Samantha's year is 1904. Is she 10 in the year 1904 OR is she born that year? I'm guessing that she's 10 in 1904 because that would make more sense. Is this correct???