The adjusted trial balance of Sodajerk Company at December 31, 2018 includes the following accounts: Retained Earnings $12,600; Dividends $7,000; Service Revenue $38,000; Salaries and Wages Expense $13,000; Insurance Expense $2,000; Rent Expense $3,500; Supplies Expense $2,500; and Depreciation Expense $2,000.

Prepare a retained earnings statement for the year.