If something is currently at it's highest state ever achieved (so the right-most point on a graph would be the highest point) I have a tendency to want to say that it's "at its peak", but as far as I know, "peak" actually implies something like the maximum point that it not only has, but will ever achieve. It's not really a "peak" until it stops increasing and starts decreasing, and it's only "the peak" if it will never again make it that high.
What then is a more correct way of saying "as high as it's ever been, and still going"? Or have I got "peak" wrong above?