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

### Instruction:
What is the intro date for the throughput of 16 mbit/s?

### Inputs:
table_name: table, columns: ['Manufacturer', 'Model', 'Intro Date', 'Interface', 'OS', 'Price (USD)', 'Price', 'Throughput']

### Response:
SELECT Intro Date FROM table WHERE Throughput = 16 Mbit/s