U.S. pipeline exports of natural gas continued to grow in 2016, and they have doubled since 2009. Almost all of this growth is attributable to increasing exports to Mexico, which have accounted for more than half of all U.S. natural gas exports since April 2015. In August, the United States exported 4.2 billion cubic feet per day (Bcf/d) of natural gas to Mexico via pipelines.
Source: Today In Energy