How to get drop down object in drop down click event?

Hi i have a dropdown having values id and value.On the click event i need to use both id and value .now i am passing id only in ngmodel.how can i pass the object in ngmodel..so i can use in ts like object.id,and object.value

 

please help 

 

this s my dropdown

 

 

 

in ts file i shud get like

 

onSelectYear(obj: any) { 

obj.id=

obj.value= 

}