Line Chart Demo
Line charts follow a value over time. A date column is grouped by the span asked for — day, week, month, quarter or year — and can be split into a line per year to compare them.
Revenue and Deals Over Time
The first chart draws a line per year through its months (GroupByDateGrouping with SeriesDateGrouping) for this year and the two before it, so the years can be compared month by month. The second counts the opportunities closed each year, won and lost.