French speakers! What does this mean?

What does this mean? (no Google translations please -_-)
1. passage des classes creuses à l'âge de la fécondité
2. classes creuses
3. Champ: France metropolitaine (territoire actuel)

[The ones below are marital stauses]

4. Celibataires
5. Maries
6. Veufs
7. Divorces

8. Mariees (I guess this is the female version of maries?)
9. Veuves
10. Divorcees


Thanks in advance

2010-10-09T19:38:31Z

11. année de naissance
12. effectif (in milliers)

moonman2010-10-09T19:46:30Z

Favorite Answer

Passing from the "empty classes/Most generation" to the period of fertility.
Literally "empty classes" This refers to the time after WWII when there were large parts of the population that were wiped out. (I did some research to correct my earlier response). The age of fertility would be the Baby Boom
Field: Metropolitan France (current territory)

(Masculine plural)
Single
Maried
Widowed
Divorced

(Femenine Plural)
Maried
Widowed
Divorced

Birth year
Members/ Population (in thousands) This refers to who many people make up a given group.

Sorry, I'm not on my A-game tonight. I made some obvious mistakes in my earlier answer. They are corrected now.

?2010-10-10T02:42:06Z

1. ~~~~~~~~~
2. ~~~~~~~~~
3. ~~~~~~~~~

4. Single
5. Married
6. Widowed
7. Divorced

8. ~ 10. you were right

11. birth year
12. asking you for size (not sure of what), in thousands

Someone else could hopefully help you w/ the first 3 and the last one as I'm not as familiar with those