Where do America's jobs come from? What types of companies are
responsible for hiring the most employees? I have found information
about company size by # of employees at
http://data.bls.gov/labjava/outside.jsp?survey=en. Now I am looking
for a similar breakout for public companies only by size in terms of
standard market cap classifications (micro cap = <$250M, small cap =
$250M - $1B, mid cap = $1B - $5B, large cap = >$5B).  To summarize,
how many employees (in total) work for public companies that are micro
caps, small caps, mid caps, and large caps?