I am looking for a data set listing the amount of personal deductions from the federal tax income as collected by the Internal Revenue Service (IRS) in the United States, broken down in deduction categories (such as medical expenses or giving to charity).
By amount of personal deductions, I mean the total amount as summed over all taxpayers in the United States.
- In 2015, 1.2 billion USD were deducted as medical expenses.
- In 2015, 30 million USD were deducted as lifetime learning.
Ideally, I would like to have a historical overview. (i.e., the evolution of these numbers over the years)