Years are not life;
Years are the shells of life, and empty shells
When they hold only days, and days, and days.Edwin Arlington Robinson, Tristram
The back of the character sheet is fairly limited. The main section is just a place to list major achievements and historical details, with the date they happened.
There’s too few for every year a character lived, and for some it’s not going to be enough for every year you play them, so you can exercise some judiciousness. But as the text says:
Vita nostra brevis est, (our life is short)
Brevi finietur, (and soon it ends)
Venit mors velociter, (death comes quickly)the “Gaudeamus”
and you may find yourself filling out that final line before you expect to.