national insurance contributions for retiring early

[brandy1]

Hi, my husband and I are moving abroad, Neither of us are going to be working and I would still have another 15 years before retirement age. My husband receives an army pension but still won't reach state pension age for another 10 years. Does anyone know how much we would have to contribute towards a state pension if we will not be earning a wage until we reach retirment age, thanks, Brandy1