Girls, hello everyone! Maybe someone knows, is there anyone who knows …

Girls, hello everyone! Maybe someone knows, is there anyone who knows if maternity leave benefits for childcare up to 1.5 years old are indexed? But I've been on maternity leave since 23 and my maximum benefit is this, but online I see that it automatically indexes only the minimum, does anyone know how to make sure my maximum benefit is indexed? ??‍♀️