Just to share

2005 - 1800 (Pte)
2007 - 2400 (Public)
2008 - 2900 (Public)
2009 - 3200 (Public)
2010 - 4200 (Pte)
2011 - 5200 (Pte)
2013 - 6000 (Pte)

Still not doing that well as compared to many on this forum, but happy to dig my way out of the low starting pay.

And I think pte and public doesn't matter, really depends on whether your boss likes you.