Mich. Comp. Laws § 455.306

Sec. 6. There shall be 2 classes of members, life and annual. Any person may become a life member by paying to the corporation $100.00 or more in cash, or donating property or services of that value, which the corporation is willing to accept. Any person over 18 years of age may become an annual member by the payment of $1.00 or more. His membership shall terminate if he fails to pay dues for any year of at least $1.00 before the election of directors for the ensuing year.