least developed countries and small island developing states, to increase significantly the availability of high-quality, timely and reliable data disaggregated by income, gender, age, race, ethnicity, migratory status, disability, geographic location and other characteristics relevant in national contexts." this target has three indicators: indicator 17.18.1: statistical capacity indicator for sustainable development goal monitoring indicator 17.18.2: number of countries that have national statistical legislation that complies with the fundamental principles of official statistics indicator 17.18.3: number of countries with a national statistical plan that is fully funded and under implementation, by source of funding by 2017 only the half of the funding required for data and statistics ($690 million) was mobilized. target 17.19: further develop measurements of progress target 17.19 is formulated as: "further develop measurements of progress: by 2030, build on existing initiatives to develop measurements of progress on sustainable development that complement gross domestic product, and support statistical capacity-building in developing countries." this target has two indicators: indicator 17.19.1: dollar value of all resources made available to strengthen statistical capacity in developing countries indicator 17.19.2: proportion of countries that (a) have conducted at least one population and housing census in the last 10 years; and (b) have achieved 100 per cent birth registration and 80 per cent death registration custodian agencies custodian agencies are in charge of reporting on the following indicators: indicator 17.1.1 and 17.1.2: international monetary fund (imf) indicator 17.2.1 and 17.9.1: organisation for economic co-operation and development (oecd) indicator 17.3.1: organisation for economic co-operation and development (oecd) and un conference on trade and development (unctad) indicator 17.3.2, 17.4.1 and 17.17.1: world bank (wb) indicator 17.5.1: un conference on trade and development (unctad) indicator 17.6.1: unesco institute for statistics (unesco-uis) indicator 17.6.2: international telecommunication union (itu) indicator 17.7.1: united nations environmental programme-climate technology centre and network (unep-ctcn) indicator for 17.8.1: international telecommunication union (itu) indicator 17.10.1, 17.11.1, 17.12.1 and 17.13.1: world trade organization (wto), international trade centre (itc) and united nations conference on trade and development (unctad) indicator 17.14.1: united nations environmental programme (unep) indicator 17.15.1 and 17.16.1: organisation for economic co-operation and development (oecd) and united nations development programme (undp) indicator 17.18.1 and 17.19.2: department of economic and social affairs-statistics division (desa-unsd) indicator 17.18.2 and 17.18.3: paris 21 indicator 17.19.1: paris 23 monitoring and progress high-level progress reports for all the sdgs are published in the form of reports by the united nations secretary general. the most recent one is from april 2020. challenges main article: sustainable development goals § challengeschallenges include the absence of data, trade tensions and covid-19. partnerships with private finance there are concerns that target 17.17 could undermine the rest of the sdgs. indeed, according to a 2018 un report, "in terms of costs, private finance is more expensive than public finance, and public-private partnerships can also incur high design, management and transactional costs due to their complexity and the need for external advice". in addition, negotiations of these public-private partnerships can cause project delays of some years. impacts of the covid-19 pandemic the un secretary-general gave a development of strategy that spread out a dream for how the global network can show a powerful, organized reaction to the covid-19 pandemic. the 2020 financing for economical advancement report traces measures to address the effect of the unpacked worldwide back down and financial crisis, particularly within the world's poorest nations. to support the poor communities they also started a un reaction and trust fund. unfortunately, remittances to low income countries are expected to fall and global investment is expected to decline by 40% owing to the pandemic. organizations the following united nations organizations are involved in sdg 17, being custodians of one or several indicators: international monetary fund (imf) organisation for economic co-operation and development (oecd) un conference on trade and development (unctad) world bank (wb) un conference on trade and development (untad) unesco institute for statistics (unesco-uis) international telecommunication union (itu) united nations environmental programme-climate technology centre and network (unep-ctcn) world trade organization (wto) international trade centre (itc) united nations conference on trade and development (unctad) united nations environmental programme (unep) united nations development programme (undp) department of economic and social affairs-statistics division (desa-unsd) paris 21