No, it is from USA irc 2014 databook http://www.irs.gov/pub/irs-soi/14databk.pdf page 22 - table 11 "In FY 2014, examinations protected a total of almost $4.5 billion in refund payments, of which $4.4 billion came from feld examinations and $93.3 million from correspondence examinations (Table 11