SELECT "Year" FROM table_2763 WHERE "Starts" = '15'
Name the year for 15 starts
CREATE TABLE table_2763 (
    "Year" real,
    "Starts" real,
    "Wins" real,
    "Top 5" real,
    "Top 10" real,
    "Poles" real,
    "Avg. Start" text,
    "Avg. Finish" text,
    "Winnings" text,
    "Position" text,
    "Team(s)" text
)