I will really appreciate hearing from you on this one. The national collection or non-collection of such data is a scandal. However, the number of children affected by divorce is about 1 million per year of the 1.15 million divorces, making the number of children affected about .9 per divorce, not 1.2 as supposed by your questioner. But that is still about 30 million children impacted over the last 30 years.
People forget that.
Also the number of children in the family will probably vary regionally. I don't have a national statistic. But there are an increasing number of divorces soon after the birth of the first child. Diane, I can't figure out how to get to the archives of the email messages. It seems you've changed how the search engine works.