This was already posted in other forums but since we've got a thread for tour statistics I wanted to bring it here too.
This is Pollstar's 2008 MidYear report on the top 100 tours. Keith and Carrie's tour is at #11 with $18.5 million grossed and Carrie's CR tour is at #27 with $12.3 million grossed.
Desi posted a list of the country acts who made the top 100 too.
Artist / Gross in millions
1. Kenny Chesney 35.3
2. Rascal Flatts 25.4
3. Keith Urban/ Carrie Underwood 18.5
4. George Strait 18.0
5. Eagles 15.8
6. Tim McGraw 14.2
7. Carrie Underwood 12.3
8. Brad Paisley 9.4
9. "Rowdy Frynds" Lynyrd Sknyrd/ Hank Williams Jr. 8.5
10. Reba McEntire/ Kelly Clarkson 7.5
11. Robert Plant and Alison Krauss 5.4
12. Anne Murray 4.7
13. Brooks & Dunn/ Alan Jackson 4.5
14. Martina McBride 3.9
15. Garth Brooks 3.8
16. Trace Adkins 3.8
17. Big & Rich 3.2
18. Dolly Parton 3.0