Stock associations shall have permanent stock which may be issued with or without par value but with a statement of value of nonpar stock in accordance with Title
23B RCW. The minimum amount of such stock shall be twenty-five thousand dollars in the case of associations outside of incorporated cities, or in cities of less than twenty-five thousand population. Associations located in cities of greater population shall have as a minimum, fifty thousand dollars of such stock. The board of such association is authorized and directed to issue and maintain the stock in the following percentages: Three percent upon the first five million dollars; two percent upon the next three million dollars, and one percent upon all additional withdrawable savings: PROVIDED, That associations whose savings are insured by the Federal Savings and Loan Insurance Corporation shall not be required to maintain stock in excess of three hundred thousand dollars. A stock association may issue preferred or special classes of shares as provided in chapter
23B.06 RCW.