What are the probability of getting standard for a greencard as an immigrant within the U.S.?

My friend came from Kenya and has been waiting somewhat over a year now, what are the chances for him that he will get agreed? What is the average waiting time and about how many people apply and take accepted each year? Please help.
Answers:   
You do not endow with enough info to be able to answer. Under what criteria had he applied? Family, work or lottery? If it be the lottery, and he has not heard anything, them he was unsuccessful. All successful applicants own been notified. If he applied under another criteria, them he requests to contact USCIS as he should at least have received a receipt number.
Let him stay here immorally. Just stay in the US and keep your mouth shut and we will reward him with our tricky earned tax dollars. He'll get a post, free health care, free education plus collage, walfare if needed, food stamps, social wellbeing and a driver's license. The far left bleeding heart libs will treat him like a king.
We spend 250 billion of our hard earn tax dollars on illegals every year.
You see, we have a Government and a Judicial System that operates on a severe retarded height.


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