Years

In the past few years, …
In the last … years …
In the early years, …
In later years …=
Over the last … years, …
For years …
For almost … years, …
…within four years.
during sb’s first … years, …
During the past 15 years …
within the first … years, …
For more than 100 years, …
For a hundred years …
For thousands of years …
…,until a few years ago.