Catalyst for Fortune 500 companies conducted by female directors survey of women directors in the proportion of board members in 2003 to 13.6%, 14.7% in 2005, 2006 and 2007 were 14.6% and 14.8% in increased to 15.2% in 2008, but compared with the proportion of male directors, the low percentage of women directors, and development in the past few years is not particularly significant changes.