In Europa Universalis II, a country's production efficiency is a number which abstractly quantifies how advanced its goods production is. Production efficiency is used in the computation of production income. It is also a small factor in computing the chance of successful colonization. Production efficiency (abbreviated PE) is determined based on a country's infrastructure technology and domestic policies, and a few other factors. The base level of production efficiency is a function of the country's infrastructure technology level: Then the following modifiers apply: