Upon dissolution, after (a) all debts and liabilities of the Cooperative shall have been paid, and (b) all capital furnished through patronage shall have been retired as provided by these bylaws, the remaining property and assets of the Cooperative shall be distributed among the members and former members in the proportion which the aggregate patronage of each bears to the total patronage of all members during the 7 years next preceding the dates of the filing of the certificate of dissolution or, if the Cooperative shall not have been in existence for such period, during the period of its existence.