Military wives constitute less than 1 percent of the American population, and they make up between 15 and 20 percent of the women paid to gestate other people’s children. Surrogacy agencies have reported this figure consistently since at least 2010, when Glamour magazine published “The Most Wanted Surrogates in the World” and ABC News produced a parallel report on the same phenomenon. One informal survey of the largest online surrogacy support forum at the time found that more than 19 percent of respondents identified as military surrogates, and subsequent academic work confirms that the 15 to 20 percent range still describes the population. The disproportion demands explanation, and the explanation indicts the cultural and economic conditions driving it.
Source: How Commercial Surrogacy Targets Military Families – First Things