In Figure 1, diesel fuel's monthly consumption in 2019 was down in February although barely below last year's consumption, above the five–year average, and in the upper boundary of the five–year range. From March to May, consumption increased. In May, consumption was above last year's consumption, above the five–year average, and above the five–year range.
As for annual consumption, it can be seen in Figure 2 that diesel fuel consumption continues to increase. Also seen in Figure 2, consumption in the last three years has increased each year bringing consumption out of the plateau seen from 2010 to 2015.
An indicator to support high or low consumption of diesel fuel is reported in miles traveled. From month to month, the difference in miles traveled can be large. From year to year, the number of miles traveled indicate very little difference although there are small increases that add up when looking at the miles traveled ten years and twenty years ago. A drawback to the miles–traveled data is that the data for passenger cars, recreational vehicles, and diesel trucks are not separated.