Why is stats.tf no longer tracking Australium weapons?

[The Recluse]

When Australium weapons first dropped one could go to stats.tf and see how many there were, it no longer does it at all. 

 

Does anyone know why it stopped? 

 

http://stats.tf/item/36/The_Blutsauger

 

I wonder if clicking "Item Origins" and then looking at how many are designated "22" is the number. It's just a guess but the number is very low so it might make sense. Is 22 some sort of code for Australium?

 

Even if that's true, it's still odd they stopped putting it right up front, I can't see their motivation for doing so.

[Slocumruls]

http://backpack.tf/stats/Strange/Australium%20Blutsauger/Tradable/Craftable

 

The Graph here claims there are 79 in game currently... Although there could be some that went uncounted

[A Cyan Stone in Mustard]

22 = Chemistry Set Completion

MvM Completion Reward = Either a regular weapon, botkiller weapon or Australium Weapom