There are two complicated parts to the story.
First, do you have a normal-moderate winter, or a severe winter? Last year, I would describe as fairly moderate.
Second, there are two ways that the use of natural gas figures the consumption. Roughly half of homes/apartments use natural gas for heat. Around 10-to-12 percent of the national grid consumes natural to produce power (backing-up solar and wind). If you lessen the grid situation (by using coal/nuke power longer), then you would save on use of gas for power production.
None of this big picture discussion is really understood by the political establishment.
In addition some gas-powered central heating plants can be easily converted to use heating oil.