Here's the official BITRE OTP Report for April 2009:
http://www.bitre.gov.au/publications...Apr%202009.pdf
And for those who want to check the raw data to see if the reported differences are statistically significant, and consistent over a longer period, here's the full time series from November 2003 to April 2009:
http://www.bitre.gov.au/publications...(Master)_m.xls