适合先看哪些数据？
研究喀麦隆时，通常会先查看人口、GDP、人均GDP、经济增长率、贸易开放度、通胀、预期寿命、教育和环境排放等基础指标。这些变量能帮助用户快速判断喀麦隆的经济规模、居民收入、增长波动、人口结构和可持续发展压力。
喀麦隆：来自联合国机构的净官方流量，IFAD（现价美元）
Cameroon：Net official flows from UN agencies, IFAD (current US$)
下载数据指标代码：DT.NFL.IFAD.CD | 国家/经济体代码：CMR
趋势图表
趋势解读
喀麦隆的Net official flows from UN agencies, IFAD (current US$)在1983年至2023年有40个有效观测值。长期看，最新值较起点变化7,194,010（约+1893.2%）；最近五个有效年份整体呈上升。该指标为现价或美元口径，趋势会受到通胀、汇率和价格水平影响。
数据一览
喀麦隆：来自联合国机构的净官方流量，IFAD（现价美元）历年数据
单位：current US$
| 年份 | 数值 |
|---|---|
| 2023 | 7,574,010 |
| 2022 | 8,897,690 |
| 2021 | 4,740,000 |
| 2020 | 11,229,436 |
| 2019 | 5,822,580 |
| 2018 | 5,618,310 |
| 2017 | 6,217,556 |
| 2016 | 5,553,722 |
| 2015 | 5,366,032 |
| 2014 | 7,000,000 |
| 2013 | 5,570,000 |
| 2012 | 4,680,000 |
| 2011 | 1,600,000 |
| 2010 | 3,110,000 |
| 2009 | 2,460,000 |
| 2008 | 2,690,000 |
| 2007 | 4,150,000 |
| 2006 | 2,970,000 |
| 2005 | 2,250,000 |
| 2004 | 2,030,000 |
| 2003 | 1,430,000 |
| 2002 | -540,000 |
| 2001 | 350,000 |
| 2000 | -890,000 |
| 1999 | -450,000 |
| 1998 | -770,000 |
| 1997 | -3,800,000 |
| 1996 | -1,270,000 |
| 1995 | -70,000 |
| 1994 | -20,000 |
| 1992 | -130,000 |
| 1991 | 1,590,000 |
| 1990 | 7,170,000 |
| 1989 | 860,000 |
| 1988 | 2,340,000 |
| 1987 | 5,540,000 |
| 1986 | 4,930,000 |
| 1985 | 890,000 |
| 1984 | 720,000 |
| 1983 | 380,000 |
指标解释
World Bank official description / 世界银行官方说明
Net official flows from UN agencies are the net disbursements of total official flows from the UN agencies. Total official flows are the sum of Official Development Assistance (ODA) or official aid and Other Official Flows (OOF) and represent the total disbursements by the official sector at large to the recipient country. Net disbursements are gross disbursements of grants and loans minus repayments of principal on earlier loans. ODA consists of loans made on concessional terms (with a grant element of at least 25 percent, calculated at a rate of discount of 10 percent) and grants made to promote economic development and welfare in countries and territories in the DAC list of ODA recipients. Official aid refers to aid flows from official donors to countries and territories in part II of the DAC list of recipients: more advanced countries of Central and Eastern Europe, the countries of the former Soviet Union, and certain advanced developing countries and territories. Official aid is provided under terms and conditions similar to those for ODA. Part II of the DAC List was abolished in 2005. The collection of data on official aid and other resource flows to Part II countries ended with 2004 data. OOF are transactions by the official sector whose main objective is other than development-motivated, or, if development-motivated, whose grant element is below the 25 per cent threshold which would make them eligible to be recorded as ODA. The main classes of transactions included here are official export credits, official sector equity and portfolio investment, and debt reorganization undertaken by the official sector at nonconcessional terms (irrespective of the nature or the identity of the original creditor). UN agencies are United Nations includes the United Nations Children’s Fund (UNICEF), United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA), World Food Programme (WFP), International Fund for Agricultural Development (IFAD), United Nations Development Programme(UNDP), United Nations Population Fund (UNFPA), United Nations Refugee Agency (UNHCR), Joint United Nations Programme on HIV/AIDS (UNAIDS), United Nations Regular Programme for Technical Assistance (UNTA), United Nations Peacebuilding Fund (UNPBF), International Atomic Energy Agency (IAEA), World Health Organization (WHO), United Nations Economic Commission for Europe (UNECE), Food and Agriculture Organization of the United Nations (FAO), International Labour Organization (ILO), United Nations Environment Programme (UNEP), World Tourism Organization (UNWTO) and United Nations Institute for Disarmament Research (UNIDIR). Data are in current U.S. dollars.
可供参考的中文翻译：国际农业发展基金（IFAD）净官方流量是指IFAD向受援国提供的官方资金净支付额。官方流动总额是官方发展援助（ODA）与官方援助以及其他官方流动（OOF）的总和，代表整个官方部门向受援国的支付总额。净支付是赠款和贷款的支付总额减去偿还以往贷款的本金。官方发展援助（ODA）包括以优惠条件提供的贷款（至少具有25%的捐赠成分，以10%的贴现率计算）和旨在促进DAC列名受援国经济发展的赠款。IFAD作为联合国农业领域专门机构，主要支持发展中国家特别是最不发达国家的农业和农村发展项目，其资金流动反映多边发展合作中与粮食安全和减贫相关的资金往来。数据单位为现价美元。
数据口径与风险提示
- IFAD净流量可正可负，正值表示当年拨付额超过还款额，负值表示还款额超过新拨付额，反映资金循环而非单纯的援助规模
- 2012年中国IFAD净流量达峰值3475万美元后显著下降，2019年后连续五年为负，与还款周期高度相关
- 中国IFAD数据仅有43个年度观测点，部分年代数据缺失，无法反映完整的资金周期
- 该指标仅涵盖IFAD一个机构，无法代表中国接受联合国系统整体援助情况
- 现价美元数据受美元汇率波动影响，跨国比较时需考虑通胀和汇率因素
- IFAD作为专注于农业发展的多边机构，其项目周期较长，单一年份数据不宜直接用于趋势判断
喀麦隆WDI数据常见问题
数据覆盖如何理解？
当前构建中，喀麦隆最新有值年份为 - 年，最新年份有值指标数为 0，覆盖年份范围为 --- 年，数据总体缺失率约 0%。这意味着不同指标的可用年份并不完全一致，下载长面板后需要先检查缺失值再设定样本区间。
论文和课程作业怎么用？
喀麦隆 WDI 数据适合用于宏观经济描述、国家画像、时间序列趋势、跨国比较和变量筛选。若用于回归分析，应优先统一年份、单位和价格口径，并记录数据下载日期；若用于课堂报告，可以围绕一组核心变量解释喀麦隆与全球或同地区国家的差异。
有哪些使用风险？
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