Went toward freedom in any amount of time, extrapolated to any other time, will still be in the same direction, aka toward freedom. The direction cannot change when you have two data points and linearly extrapolate
If they went up 0.1 in 10 years, if you extrapolate 10 more years, they'll go up 0.1. If you extrapolate 5 years, they'll go up 0.05. They'll always go up at the rate of 0.1/10 years