The International Comparison Program (ICP) is one of the world’s largest statistical initiatives, coordinated by the World Bank under the auspices of the United Nations Statistical Commission (UNSC). It is implemented through a partnership of participating economies and multilateral agencies. Since its beginnings in 1968, the ICP has produced nine comparisons, with the latest one being for reference year 2017 – the ICP 2017 cycle – which covered 176 economies. At its forty-seventh session, in March 2016, the UNSC instituted the ICP as a permanent element of the global statistical programme, to be conducted on a three-year cycle. The next ICP comparison is conducted for reference year 2021.