2010 - 2011 7 8 9 27.6% 29.8% 33.9% 9 7 8 9 22% 27.1% 20.9% 8 2009 21.7% 23.9% WHO (Body Mass Index, BMI) BMI 1996 BMI BMI ( ) BMI= ( )÷ 2( 2) 4 http:// action.cybers.tw/ 。