German to English Bus/Financial Finance (general)

"Dies bedeutet nicht, dass ein Nullwachstum bestimmter Größen unterstellt wird, sondern lediglich ein konstantes Verhältnis der Größen mit Eintritt in die ewige Rente."

I'm trying to settle on the appropriate term for Größen in this sentence?

The subject is mergers and acquisitions and their effect on enterprise value. The sentences that precede this one talk about a phase model that has been established as the dominant approach to forecasting in valuation, which divides the forecast into a detailed planning period of three to five years and a subsequent residual value phase. Based on the going concern premise, the residual value period indicates a future equilibrium or steady state, a condition characterized by stable returns on net capital expenditure made after the detailed planning period.

Any ideas what the Größen is specifically referring to?

Many thanks