Highcharts Dumbbell Chart

A Highcharts dumbbell chart made accessible by the MAIDR Highcharts adapter. Each row compares two values, and the gap between them is the message, so the announcement carries the change alongside each end. Click on the chart and use left and right arrow keys to walk the countries, and up and down to move between the two years. Highcharts names neither end, so the names are supplied to the adapter through dumbbellLabels.