en años anteriores

= in prior years, in years past, in past years

Ex. The analysis found substantial differences in price structure among regions, but less price differentiation based on quality than in prior years.

Ex. But many shoppers said stores were not knocking down prices as much as in years past.

Ex. Public libraries in the USA have experienced severe revenue shortages in past years, leading to reductions in services.

* * *

= in prior years, in years past, in past years

Ex: The analysis found substantial differences in price structure among regions, but less price differentiation based on quality than in prior years.

Ex: But many shoppers said stores were not knocking down prices as much as in years past.

Ex: Public libraries in the USA have experienced severe revenue shortages in past years, leading to reductions in services.