DFAT currently has the Green Book located here: http://dfat.gov.au/about-us/publications/aid/statistical-summary-time-series-data/Pages/australias-official-development-assistance-standard-time-series.aspx
More recent DFAT statistical summaries are located here: https://www.dfat.gov.au/about-us/publications/statistical-summaries-australias-international-development-cooperation
You can probably find budget documents here: https://www.dfat.gov.au/about-us/publications/statistical-summaries-australias-international-development-cooperation (although googling DFAT aid orange book might work as well)
