Count based on change in year

Good morning. 

PowerBI newbie here.  I have used power query before and, to a (much) lesser extent, power pivot.  Doing this for a class project but I'd also like to be able to leverage this for work.  I have a list of donations that have been made over the course of 4 years.  The most pertinent columns are ID and Year.  I'd like to be able to see which donors have made multiple donations within the same year, and which have made multiple donations over several years.  I imagine it would look something like this:

So far I tried the following for the donations within the same year, but it's not quite what I need. It appears to just simply doing a count of donations by ID without taking into account the change in year.

Repeat Within Same Year =
COUNTX(
FILTER(
'Donation_Level',
'Donation_Level'[id]=EARLIER(Donation_Level[id])
),
Donation_Level[Year]
)

Am I better off doing this in the Edit's Query Section (power query?) or in the data section (power pivot?)

Any advice would be appreciated.  

Thanks!