To get an accurate number, you would need to specify:
* Country: The US has a vastly different number of graduates than, say, Nigeria.
* Degree level: Bachelor's degrees? Master's degrees? Doctorates? Associate's degrees? All of the above?
* Year: Graduation numbers fluctuate year to year.
For example, in the United States, the number of bachelor's degrees awarded annually is in the range of 1.9-2.1 million, but this fluctuates slightly from year to year. Including other degrees would significantly increase that number.