The WHO is financed by contributions from member states and from donors. In recent years, the WHO's work has involved more collaboration; there are currently around 80 such partnerships with NGOs and the pharmaceutical industry, as well as with foundations such as the Bill and Melinda Gates Foundation and the Rockefeller Foundation. Voluntary contributions to the WHO from national and local governments, foundations and NGOs, other UN organizations, and the private sector, now exceed that of assessed contributions (dues) from the 193 member nations.