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

### Instruction:
When the 2006  census had a population of 422204, what was the density (pop/km²) ?

### Inputs:
table_name: table, columns: ['Name', '2011 Census', '2006 Census', '% change', 'Land area (km²)', 'Density (pop/km²)', 'Population rank']

### Response:
SELECT COUNT Density (pop/km²) FROM table WHERE 2006 Census = 422204