A little more information:

Unfortunately, this Mayo web site garbled the numbers that were the table tabulating my numbers. It looked fine until I hit the SEND key.

There are/were four columns:
Date, PSA total, PSA change year to year, and % Free PSA(starting 6/17) . Maybe copy/paste could reassemble.

PSA total slowly rose for 17 yrs. BPH?
PSA velocity was steady (consistent with BPH?) until 10/18
PSA "free" wobbled around 20% (probability of cancer 20%?)

Now, you might have a problem with metrics and reference values. To begin with, the "normal ranges" or reference values that I put in the table are not well established, so, for example, the long running so called "normal range" of 4 ng/mL was poorly established but widely used, so it's easy to over-interpret the meaning of these numbers. I suspect this is so for the % Free PSA.

Now, once one starts medical procedures on the prostate such as REZUM, one will have no idea what PSA value if any to use as a reference. I gather you have not started this BPH treatment.

Have you had a diagnostic MRI of your prostate?