A new survey shows that the percentage of women on Wisconsin corporate boards is slowly rising. Milwaukee Women Incorporated says 17-point-six percent of the directors on the state’s 50 largest publicly owned companies are female — and that’s up from 16-point-one nine percent one year ago. The report says 79 women are on now on those boards out of 449 total directors. The group’s chair, Sandy Wysocki, says the increase is slower than what they prefer — “but it continues an upward trend.” Almost 15 years ago, about nine-percent of board seats at the state’s largest public firms were held by women — almost half of what it is now.