Wow that's actually sickening to realize how certain countries can expect its citizens to survive off such little pay.
Even with a monthly increase of $49 to $82, if you factor in the family aspect then it's really not much of an increase.

Per wikipedia:
18,000 naira per month (was $115 but following the recent devaluation of the naira has fallen to $58, or $38 using the parallel market rate).
On 25 September 2018, Nigerian workers embarked on a national strike to force government to increase the minimum wage to 56 thousand Naira $154).