I'm kinda surprised to see no Faith Hill on the list.
Thought she's a huge touring act in the US, to say the least. She could have done tremendous amount of shows just to compile huge numbers for her tour catalogue, just like her husband: Tim McGraw.
Not expecting Cher to place that low too, considering to mention her multiple Farewell Tours.
And Britney Spears of course, the youngest in the bunch. Rubbing elbows within the circle of the legends, and the haters have the audacity to say she's talentless.
Those numbers digress.