Translation of "Since the beginning of the year" in German

Since the beginning of September the 57-year-old has been training the Mexican club.
Der 57-Jährige trainiert den mexikanischen Club seit Anfang September.
WMT-News v2019

Related phrases

begin at the beginning beginning of each year since the beginning of the year since this year
at the beginning of the year from year to year since the beginning year on year
since some years since the very beginning