2005: 1 (New Mexico)
2006: 2 (Utah, TCU)
2007: 1 (New Mexico)
2008: 2 (Colorado State, Air Force)
2009: 1 (Wyoming)
2010: 0
2011: 0
2012: 1 (Georgia Tech)
2013: 2 (Utah State, Houston)
2014: 2 (Texas, Middle Tennessee)
2015: 3 (Nebraska, SJSU, Utah State)
2016: 0
2017: 0
2018: 1 (Wisconsin)
2019: 2 (Tennessee, Utah State)