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

### Instruction:
How many numbers were recorded under 2001 when 2006 was 18.9?

### Inputs:
table_name: table, columns: ['Ethnic Group', '2001 (%)', '2001 (people)', '2006 (%)', '2006 (people)']

### Response:
SELECT COUNT 2001 (%) FROM table WHERE 2006 (%) = 18.9