force gap with Hidden and Empty Cells

Excel 365 MSO
Hello,

I have some series of values covering several years and I would need to make a visual separation between each year.

I thus added a blank line :

(Note I tried blank line and adding values #N/A with same result).

I have several charts with same option :

(Note I also tried checking "Show #N/A as an empty cell" with same result)

For one of my charts it works a expected :

But not for other ones like :

Is it linked to my values or to the type of chart ?

I have attached a minimal sample.

Thank you for your kind help.