user: Question: How many Cook Island League competitions were there?
Columns: ['Nations', 'Competition', 'Teams', 'Established', 'Latest Year', 'Winner', 'Runner-Up', 'Tier/Division']
Types: ['text', 'text', 'real', 'real', 'text', 'text', 'text', 'text']
Sample row: ['AUS / NZL', 'National Rugby League ( NRL )', 16.0, 1908.0, '2013', 'Sydney Roosters', 'Manly-Warringah Sea Eagles', 'A-Grade']
SQL:

assistant: SELECT COUNT("Latest Year") FROM "Table" WHERE "Competition" = 'Cook Island League';