Yesterday I started collecting data for all TF2 servers in the Australian region as returned by the Steam master servers. This includes NZ but misses some Aussie servers which don't have a region setting (I might look for these based on latency and contact the server owners later).
There's lots of questions I have about the Aus TF2 player & server base but by happy coincidence Valve released an update around 7am this morning (Sydney time, AKA Australian EST) so here's a simple graph of total players && servers starting at 2am and ending at 2pm (7 Sept 2012).
The total number of servers hovers around the 470 mark. Within 5 hours we're back to over 400 servers and during a time when most operators are probably at school && work. No doubt auto-update scripts and server rental companies help here.
And at 2am in the morning each player could have their own server, forever alone! :)
Random factoid: the player base last night (Thursday) peaked at ~2,800 around 7:30-8pm. Raw data here.