Survey: Number Of U.S. Millionaires Increases  The poverty rate
may be up, but so is the number of millionaires. A survey of
U.S. households with "investible assets" of $1 million or more
was up 8 percent in a year. It's a big increase, and brings the
population of millionaires back to where it was in 2006.    The
Census Bureau says the number of people living in poverty is up,
but so are the ranks of the wealthy, according to a report
released yesterday. The report, from Phoenix Marketing
International, says the number of American millionaires has
increased over the past year, after falling a bit during the
depths of the financial crisis.  NPR's Jim Zarroli reports.  JIM
ZARROLI: The company says there were nearly 25 million Americans
at the end of June who could be considered affluent. It defines
affluent as having more than $150,000 a year in income or a
quarter million dollars in investible assets, which doesn't
include a person's house or retirement savings.  David Thompson
is managing director of the Af