CREATE TABLE team (team_id_br VARCHAR(255), name VARCHAR(255)); CREATE TABLE postseason (year VARCHAR(255), team_id_winner VARCHAR(255))
What is the number of wins the team Boston Red Stockings got in the postseasons each year in history?
    
SQL: SELECT COUNT(*), T1.year FROM postseason AS T1 JOIN team AS T2 ON T1.team_id_winner = T2.team_id_br WHERE T2.name = 'Boston Red Stockings' GROUP BY T1.year