The value of bitcoin would be much higher by then, as we will see many users adopting bitcoin as a currency, and many businesses will enter into the world of bitcoins and many merchants will start accepting bitcoin as a payment method.
It must have happened in the period until 2020 and I'm sure it was. With time during the bitcoin would have increased on a large scale. I hope in the future bitcoin prices will soar.
You will never of course know what will happen in 2020 and that is very hard to predict, because it is a currency.
And that is always changing but we all hope that it is going to rise and that we can sell it for a good price.