It's weird to think that there is currently 5 living former US president whereas there is only two former president still alive in France.
I know that the length of presidency is one year longer in France than in USA but still, don't know how to explain that…
Also, I think I'll have to wait a long time to see a former French president on DL again : Francois Hollande is currently 68 and Nicolas Sarkozy 67 so quite young and both in excellent shape.
Finally, there is still 5 living former French first-lady (so as much as US first-lady) : Bernadette Chirac and Anne-Aymone Giscard d'Estaing, the oldest ones, both born in 1933 ; Cecilia Sarkozy, born 1957; Carla Bruni Sarkozy, born 1967 and Valerie Trierweiller, born 1965. The question of including Julie Gayet (b.1972) in this list is quite tricky.
If you want my opinion, Bernadette Chirac is the next one to go and I think it'll be pretty soon considering she's weelchairbound, haven't been seen in 3 or 4 years now and is said to be very very frail. A good addition to any list and maybe the official one.