One option would be to drag Year([Date]) field to Color and/or to Size on the Marks card. You can then make the current month line thicker and a color that stands out a bit more.
Hope this helps!
This is the third time you've asked exactly the same question slightly differently, and it's already been answered - How to make current year line larger
Please don't create new threads for questions you've already asked and we've taken the time to answer.
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