The deficit and debt in the United States during the presidency of Ronald Reagan - more likely problem of federal revenues, or federal outlays?

In this work I focus on the issue of increased federal deficit and debt during the presidency of Ronald Reagan in the 1980's in the United States of America. The aim of this work is to try to recognize whether the main sources of increased deficit can be found among the federal revenues or among the federal outlays. In this work I analyze the course and progress of both sides of the budget and its subfolders in both terms of Reagan's presidency. I characterize main possible causes and circumstances, which led to changes in progress of key parts of the budget. The results of both terms are compared with each other and the conclusions are based on statistical releases. It shows that the deficit increased a lot in the first term, while declined in the second term. The most problematic parts of the budget in the first term were found more likely among federal receipts, which declined in comparison with the situation prior to Reagan's first term, and also mandatory spending, which grew rapidly. In the second term federal receipts grew much faster than outlays. From an overall perspective on both Reagan terms together in the expression in constant dollars, in historical comparison and taking into account Reagan's budget goals, the most problematic were more likely federal outlays.