Paris--Jan. 23--French consumer spending on manufactured goods fell a seasonally adjusted 0.3% in December, a slowdown from the revised 0.6% rise the month before as purchases of automobiles and household goods cooled off, national statistics institute INSEE said Tuesday. With a year-on-year rise of 2.4% in December, the data was below analysts' forecasts of a 0.1% monthly increase and 2.9% annual gain.