2003–04

Midwest

2004–05

Overseas

2005–06

Colorado

2006–07

Upper Midwest

2007–08

Great Lakes

2008–09

Overseas

2009–10

Lower Midwest

2010–11

Great Lakes

2011–12

Upper Midwest

2012–13

Overseas

2013–14

Upper Midwest

2014–15

Southwest

2015–16

Midwest

Key

Great Lakes

WI-IL-MI-IN

Upper Midwest

MN-IA-WI-IL

Colorado

SD-WY-CO-KS-NE

Northwest

MT-WA-OR

West Coast

WA-OR-CO-AZ

Southwest

NM-AZ-CO-OK-MO

Lower Midwest

IA-NE-MO-KS