If you're creating a chart over time then you may want to consider using a Time Series Bar Chart and the tips that @TriciaAanderud suggests at http://bi-notes.com/2015/12/sas-va-insert-your-own-months/   Alternatively you can create a "helper table" as in the blog post to create 0 records which @PeterWijers suggested.   Cheers, Michelle ... View more

There are lots of people who have "date" variables that are character and when you try to group those it gets very messy. For charting purposes I'm going to assume that you're willing to accept a summary and not try to have the graphing program calculate it. Is that correct? ... View more