30 percent of US had less than 20 ng of vitamin D - CDC
Very different than the 10% deficiency reported by the IoM just 4 months before
A few of the charts from: Vitamin D Status: United States, 2001–2006

Note: Very few organizations consider levels > 50 ngram (125 nmol) to be "possibly harmful"

71% of blacks had less than 20 ng of vitamin D

CLICK HERE for PDF
See also VitaminDWiki
CDC Vitamin D Grand Rounds - Aug 2010 had similar charts 7 months before this 'announcement'
CDC confirms association between more vitamin D and less insulin – Jan 2011 24% less insulin if less than 20 ng of vitamin D
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Many organizations recommend vitamin D levels of not 20, but 30, 40, 50, and even 60 ng of vitamin D
Example from above: The MINIMUM recommendation by 25 experts was 30 ng
