They don't issue many stamp sets per year (around 20 sets), which makes it an interesting country to collect!
All the stamps on the cover were issued this year 2007 and from left to right you can see:
1. Afr0-Asian 2nd games issued in a 1v set. - here
2.Lighthouses, 3v set - Le phare de l'îlot d'Arzew - here
3. Animals, 2v set - La hyène rayée - here
Enjoy the reveillon!!!