The number of female CEOs in Japan hit a record 649,262 this year, comprising more than 15% of all CEOs for the first time, according to a survey by credit research firm Tokyo Shoko Research.

The annual survey, released earlier this week, also showed that the number of female presidents among 4.25 million companies had increased threefold from 2010, when the figure was just above 210,000. The number of female CEOs, meanwhile, rose 37,038 from last year, or by 6%.

“The support of the central and local governments for (women) to start and succeed businesses as well as companies’ efforts to improve working conditions for women are steadily increasing,” Tokyo Shoko Research said of the reasons behind the rise.