Please see if the attached may give ideas.
For the 2017value measure, I used:
SUM(IF YEAR([Date])=2017 THEN 1 ELSE 0 END)
Likewise for 2018.
For the combined total, I used:
Please see workbook v10.3 attached in the Forum Thread.
283263total.twbx 47.2 KB
That helped a lot, especially giving me a better understanding of date functions.
I removed the "20172018 value" calculation from the Measure Values card and this gave me the exact table I need.
Thanks for your help!