Year after year
Definition 1 of 1
Pro Tip 1/3Consistent Sequence
Expresses a sequence of events or actions that happen repeatedly over the years without fail. 
He visits his hometown year after year.
Pro Tip 2/3No Interruption
Indicates that nothing has disrupted the continuity of the event or action across multiple years. 
Her dedication to training remains unbroken year after year.
Pro Tip 3/3Strong Tradition
Suggests a tradition or routine that is upheld with commitment over time. 
They host the family reunion year after year, without exception.