Personally I'd skip a year at the least. I guess the answer depends on how much you care about this snake's health & future. Egg-laying takes a lot out of a female snake, & while a snake in good condition (assuming healthy, well-fed, in captivity & on the young side) may have no obvious difficulty with yearly reproduction, it can still take away from them in the long run. I'm someone that prefers to "error on the side of caution" & I must admit, I'm not very motivated by quick financial rewards.