These statistics are drawn from the AusTender data available by searching 'contracts' on
data.gov.au and looking for contracts with 'cloud' in the detail, then deleting items that are actually about clouds in the sky and vendors with cloud in the title that don't sell cloud.
The FY figures are:
2010 - $65k
2011 - $308k
2012 - $1.461m
2013 - $441k
2014 - $3.662m
2015 (to date) - $20.364m
These are published dates, not annualised contract figures. the duration of the contracts varies.