Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What was the GDP (in millions USD) of Hong Kong in 2009?

### Inputs:
table_name: table, columns: ['Country / territory', 'Area (km²)', 'Population', 'Pop. density (/km²)', 'GDP millions of USD (2009)', 'GDP per capita USD (2009-2011)', 'Capital']

### Response:
SELECT MAX GDP millions of USD (2009) FROM table WHERE Country / territory = Hong Kong