WDI Database Archives

BETA. The WDI Database Archives (WDI-DA) contains previous versions of the World Development Indicators database. Data are drawn from all available electronic releases going back to 1989. Metadata for this initial beta release, however, are only available from the latest WDI database. Users should exercise caution when comparing data from different versions, as the same codes have been used to reference series from different base years or different valuations of a country’s local currency. For example, the series code for constant US dollar GDP (NY.GDP.MKTP.KD), which is currently based in 2010, has been used in previous editions when the base year was 1987, 1995, 2000, and 2005. We will be working to improve the usability of the archives by harmonizing codes and names to the extent possible and adding additional metadata.

测试版（BETA）：世界发展指标数据库档案（WDI Database Archives，WDI-DA）收录了世界发展指标（World Development Indicators，WDI）数据库的历史版本。数据源自1989年以来所有可获取的电子发布版本。不过，本次初始测试版发布的元数据仅可从最新版WDI数据库获取。用户在对比不同版本的数据时需谨慎，因为同一代码曾被用于指代不同基准年的序列，或是一国本币的不同计价方式。例如，当前以2010年为基准年的不变价美元GDP（NY.GDP.MKTP.KD）序列代码，此前曾在基准年为1987、1995、2000及2005年的版本中使用。我们将通过尽可能统一代码与名称、补充更多元数据的方式，持续提升该档案库的易用性。