You know what, it's not as bad as I was thinking.
In my mind those level of interest usually come from the stock market or house appreciation, but I guess those are much faster (I seem to recall doubling every 8 years in the stock market and housing being a bit slower).
Something feels like it'll give out, but I've felt that way for 8 years at this point and I haven't been correct.
DCA and pray I suppose.
edit: a word
It's a bit more than I expected but a 2% drop 26 times gets pretty close to halving.
The number on the page suggests 2.5% average inflation.