Coffin goes to jail

Paul Coffin gets 18 months for defrauding the government of $1.5 million dollars - CTV reports

Ok, so he gets jail time. Good. But 18 months from a possible 34? Why are there no mandatory sentences for an amount of money stolen?

Correct me if I'm wrong, but don't white collar theifs get 5 to 10 years jail time in the United States?