Average number of sorties an US fighter fly per week

[aw2007]

Anyone knows the avg number sorties a fighter- f-16, 15, 22, 35 fly per week ? I remember reading something like aircraft designers estimate the life of an airframe based on the assumptions of 300 flight hrs a year. So that translates into 5.8 hrs per week. Assuming the avg flight hrs of 1.5 per mission, do they fly on an avg of 3-4 missions a week ?