what age do geckos stop breeding ?

i was wondering if at a certain age do geckos stop breeding and if so how can you tell the age of a gecko?

From "The Leopard Gecko Manual" by Philippe de Vosjoli, Page 72:

Year Eggs
1 | 0
2 | 8
3 | 12
4 | 16
5 | 14
6 | 10
7 | 10
8 | 8
9 | 6
10 | 4
11 | 4
12+| 0



I haven't been doing this long enough to know any different but it will also likely vary slightly from gecko to gecko. That's a rough guide though