To help us stay on track, we have an internal monitoring system in place. We undertake a yearly self-assessment exercise in which we evaluate our performance in more than 34 relevant areas of sustainable practice. We target 150 to 200 improvement actions per year and monitor progress based on a simple scoring methodology.
In 2022, we continued to perform annual self-assessments to evaluate our sustainability performance across the following ESG criteria: Environment, Social, Societal, Governance, Sustainable Procurement, and Partner of Choice. Our eight European sites have undergone these assessments, and corrective actions were issued for continuous improvement.
We assess our performance with a pragmatic scoring methodology which ranks our business units from being knowledgeable about their performance to being recognized as the benchmark for each ESG topic. The results of these assessments are discussed during our quarterly management updates and concrete plans for improvement flow from this assessment. We are proud to state that our sites increased their performance by an average of 30% in 2022 as compared to 2021.