Our gas consumption in cubic metres per day from winter 2010 to date. It's rather crude, but the length of winter 2012/13 is clearly visible. We also burned a record amount of wood.
As far as global warming goes it proves nothing, but if global cooling takes off, the the issue will surely become much more personal and acute. Government policy still appears to be based on a presumption of warming. If so, then the lights will surely go out at some point over the coming winters.