hayan engrosado
-they/you have increased
Present perfect subjunctive ellos/ellas/ustedes conjugation of engrosar.

engrosar

Por consiguiente, tenemos que esforzarnos por conseguir que al final de los años venideros se hayan engrosado un poco, tal como ha venido ocurriendo durante los últimos cincuenta años.
We must therefore fight to ensure that we all have a little bit more money in our accounts at the end of future years, as has been the case over the past 50 years.
Word of the Day
to light