Looking at the graph: probably. It was already increasing (from 16-19%, one outlier to 27%, first 8 datapoints) to around 25-30% (the last 6 before the big jump). Then a big jump to 62-85% (N=20) with most around 75% (N≃13). The last bit is around 60-72% (N=12) and the very last datapoint is below 40% again but that is half outside the graph (cherry-picking datapoints?).

So to summarize, from 25% to 65%, or 2.6× the original.

Note that this is all from eyeballing that graph and estimating what percentage a datapoint is at, since the scale has an interval of 20 percent points and no minor grid or anything.