Show Count(ID) per Year

[senior_freshmen]

Hello Guys, 

I try to implement a Count of ID cummulated per year. 
DATA: 

ID	Timestamp
1	14:00:00 01.01.2019
2	14:00:00 02.01.2019
3	14:00:00 01.01.2021
4	14:00:00 01.01.2022

Now I Like to display this Values based on year, so for 2019 the Count is 2 and so forth and so on. 

Any help is highly appreciated. 

With best regards

[Bunim]

aggr(count(ID),year(Timestamp))

[senior_freshmen]

Do I have to insert it in the Expression tab of the Diagram? It does not show any Entries

I am using a Master Calendar by the wy, where I am setting up the Data via the TimeStamp Field. 

Looks like the aggr() Function does not resolve the Result correct

[Bunim]

Click on the component and his Expression will open. not on the Sheet.

[senior_freshmen]

[Bunim · Accepted solution]

add sum. 

like this - 

sum(aggr(count(ID),year(Timestamp)))

[Bunim · Accepted solution]

sum(aggr(count(ID),year(Timestamp)))