From The New York Times comes this report of pregnancy outside of wedlock:
Once largely limited to poor women and minorities, motherhood without marriage has settled deeply into middle America. The fastest growth in the last two decades has occurred among white women in their 20s who have some college education but no four-year degree, according to Child Trends, a Washington research group that analyzed government data.
More and more, marriage is becoming a means through which we see social, political, and economic power dynamics play out.