This document outlines 14 topics covered in papers from 2018 to 2021. It provides the number of papers published each year on various subtopics within each of the main topics. The topics covered include algebra, calculus, trigonometry, geometry, statistics, modern algebra, linear algebra, topology, arithmetic, vector analysis, 3-D geometry, teaching methodology, and complex analysis. A total of 2,089 papers were published over the 4 years covered in the document.