Apply the following formula to the monthly over-deployment numbers to calculate the average for the period of over-deployed licenses:
Sum of all over-deployment / total number of months = Annual average
For the above example:
Annual average = (0 + 20 + 25 + 25 + 30 + 35 + 40 + 45 + 65 + 75 + 0 + 0) / 12 = 360 / 12 = 30
If your contract duration is not equal to 12 months, take the total over-deployment over your contract duration divided by the number of months of over-deployment.
For the above example:
Average for the respective months (say, January through June= January+February+March+April+May
+May)= (0 + 20 + 25 + 25 + 30 + 30) / 6 = 130/ 6 = 21.7