The practice of earmarking contributions through the multilateral development system has gained considerable traction since the 1990s. While the practice was still limited to a few providers of official development assistance (ODA) and select multilateral organisations a few decades ago, nowadays all DAC members employ a mix of funding modalities to support the multilateral system that includes some form of earmarking, although the latter accounts for a variable share of their total contributions to the multilateral development system.