How many diapers does America go through in one month (market sizing question)? If I was an Eskimo, how would you sell me ice cream?

3.6 trillion--per US Statistics about 4 millions babies are born per year and each child uses on average about 8-10 diapers per day, so in any given month of the year we will have about 12 millions children arranging from birth to 3 years old (potty training age) and if each child uses about 10 diapers per day is about 120,000,000 per day and average 30 days per month totals about 3,600,000,000