=+PR 8-1A Evaluate internal control of cash objs. 2, 3 2006 2005 2004 2003 Cash as of December 31* $ 59,750 $ 51,112 $ 45,180 $ 54,562 Net cash flows from operating activities (48,089) (30,683) (19,319) (15,507)

*Includes cash equivalents and short-term investments.