Millions of decodes, now that you bring it up-
I started shoving them into a DB back on Mon Nov 14 18:05:45 CST 2016. Through Fri Oct 5 18:13:12 CDT 2018, there are 266,136,599 rows in the DB (which one row per second). With up to four decodes per second, there are 290,954,057 decodes in there. There are some days that were missed.
The biggest thing that surprised me was that I started the DB in 2016, not 2017... lol. Could've sworn I've been doing it only for a year so far.