Tax Analysts Tax Notes reports that the IRS in fiscal 2012 collected less in enforcement revenue for a second straight year, bringing in just $50.2 billion compared with $55.2 billion in fiscal 2011 and $57.6 billion in fiscal 2010 -- a 13 percent drop in the same two years that the agency also lost 14 percent of its enforcement personnel. The IRS in fiscal 2010 and 2011 hired the fewest revenue agents and tax compliance officers in more than 10 years -- just 200, compared with almost 3,300 in fiscal 2009 and 2010.