Does Anyone Follow the GDP Market? Mainly for Converting Prolific's Earnings to USD

In the past, I would just cash out at any random times. But as of late, I have been trying to strike when the GDP conversion is higher. How high can we expect the GDP to get in the next couple months? I am not in any hurry to cash out so I want to let it sit for as long as possible. I see it is at 1.31 right now.