YoY Comparison

Hi, I would create a visualization to compare performances over time so I created a calculated measurement 

TotalSpent_PY = 
CALCULATE (
    [Total Spent],
    OFFSET (
        -1,
        ALLSELECTED ( Data[YEAR] ),
        ORDERBY ( Data[YEAR], ASC )
    )
)

And this is the result:

The problem is that I would focus my view on a specific year (and the previous one), in that case using slicer I got this:

The only way to have it working is selecting two years and I would avoid it because users can select more than 2 years.

The final objective is getting something like:

I've tried several way (including a measurement like 

CALCULATE (SUM(), SAMEPERIODLASTYEAR)

But It is the same.

The only solution I have in mind is to create a pre-built filter with years combination (more complicated to be managed), but I don't know how to do it, someone colud help?

Thanks