user: Question: How many Total matches happened in 2003?
Columns: ['Year', 'Total matches', 'Total W-L-H', 'Singles W-L-H', 'Points won', 'Points %']
Types: ['text', 'real', 'text', 'text', 'real', 'text']
Sample row: ['Career', 46.0, '22-18-6', '5-5-2', 25.0, '54.35%']
SQL:

assistant: SELECT "Total matches" FROM "Table" WHERE "Year" = '2003';