what does when there are nine mean

“People ask me sometimes, when — when do you think it will it be enough? When will there be enough women on the court? And my answer is, when there are nine.”

無意間翻到這張照片，想到她的名言WWWWW

掃了一堆照片跟報導，倒覺得，與其說性別平等，她象徵的更是一個已經碎掉的美國夢。