<source src="https://www.youtube.com/embed/nYoHNpGy8qA" frameborder="0" allowfullscreen="true" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" width="640" height="360" dataalign="left" mediatype="iframe">SummaryLearn how to identify donors based on their consecutive years of giving.