I have a chart with 3 years of data. All 3 years show up in the chart, but only 2 show up in the legend. I've made the legend larger (Year 3 still doesn't show up) and double-checked in the "Select Data" tab to make sure the 3rd year is there (it is). What now? This is the only chart out of about a dozen that are similar that is giving me problems. Help!