Thanks very much for bringing this to our attention @kayodu.
I can see on OpenMRS Atlas that Nigeria is very much represented (although many implementations have not been updated in several months).
Could yourself or @jaghatise refer us to the points of contact who can help us ensure that the Atlas is up to date?
Regarding the annual report, the data was gathered during a recent implementation survey. I will investigate and try to determine why the data from the Nigerian implementations were not included.