My only reason for pointing out previous years' data is because this is what those honourable analysts. the price of NG moves because of this data which is meaningless.
So is the inventory report for oil. Oil is hoarded.
If I owned a gas station and went to the other gas stations in the are and told them that I will buy all the gasoline in storage at their stations and any deliveries for the next few weeks, I will be charged with hoarding.
This is no different from what the traders are doing in the nymex and ice.