<image>(2011 Spring - End of term exam in Zhuji city) The average number of computers per 100 households in the Xingfu community from 2004 to 2008 is shown in the figure.

(1) The average number of computers per 100 households in the Xingfu community increased by ____ units from 2004 to 2008.

(2) The smallest increase in the average number of computers per 100 households occurred from ____ to ____. The largest increase in the average number of computers per 100 households occurred from ____ to ____.

(3) Based on the information in the figure, predict the average number of computers per 100 households in the Xingfu community in 2009 to be about ____ units.