Wɔ mfie 1980 mfinifini mu no, ɔsoom sɛ ɔkwankyerɛfo a ɔda adwumakuo a ɛhwɛ ɔman no toɔ gyegye so a ɛne Office of Revenue Commission, na afei nso, ɔsoom sɛ ɔkyerɛwfo maa asoɛ a ɛhwɛ amanɔne nsɛm so. Wɔ afe 1990 mu no, na ɔsom sɛ ɔkyerɛwfo ma asoɛ ɛhwɛ nkurow nketewa amambuo ne mpontuo so.