Then by 2-3 years old you'd be looking at 2-3 eggs per week. Battery hens (which are commercial hens) lay a lot at first but then really slow down once they start aging. Heritage hens don't lay as many up front but continue laying for a longer period of time.
I hen that isn't a commercial breed. A commercial breed would be a sex-link, ISA Brown, White Leghorn and a heritage breed would be a Plymouth Rock, Orpington, Wyandotte etc. Commercial breeds are bred for eggs (or meat) while heritage breeds are bred for both. Commercial breeds generally lay...
With three year old heritage hens... 3 eggs a week will be the most. I'd say your looking more around the 2 egg range with the odd hen laying 3 a week.