Just out: Trends in U.S. Residential Natural Gas C
"Appliance efficiency gains, improved housing construction, population shift towards warmer regions, higher commodity price, and an increase in the share of natural gas customers who do not use natural gas as their primary space heating fuel have resulted in a significant decrease in the average volume of natural gas used by U.S. households with natural gas service. Per customer consumption fell in 16 out of the past 19 years. On a weather-adjusted basis, U.S. residential consumption over the 19-year period (1990- 2009) fell from 95 thousand cubic feet (Mcf) per customer in 1990 to 74 Mcf in 2009, or 22 percent. This paper analyzes both U.S. as well as regional consumption patterns."
https://www.eia.gov/pub/oil_gas/natural_gas/feature_articles/2010/ngtrendsresidcon/ngtrendsresidcon.pdf