《北京统计年鉴》是一部按年连续出版的大型统计资料书,通过大量的统计数据记录北京市一年来经济社会发展变化情况,是国内外各界人士了解北京、认识北京的重要资料工具书。一、关于框架结构(一)总体结构本年鉴整体框架保持稳定,彩页部分以图文并茂的形式反映北京市主要经济社会指标发展变化趋势;统计表是年鉴的主体内容,主要包括综合,国民经济核算,人口与就业,价格指数,人民生活,财政与税收,能源、资源和环境,城市公用事业,固定资产投资和房地产开发,对外经济贸易,农业及农村经济,工业,建筑业,第三产业,交通运输邮电业,批发和零售业、住宿和餐饮业,旅游业,金融业,科技,教育,卫生及社会服务,文化和体育,公共管理、社会保障和社会组织,开发区等24个章节,从多领域、多行业反映北京市经济和社会发展情况。(二)章节结构章节内结构:每一章节由简要说明、统计表和主要统计指标解释三部分组成。其中,简要说明在每一章节首页,主要介绍该章节的主要内容、统计范围、指标口径和历史数据调整方法;统计指标解释在每章节尾页,主要对本章节内所涉及的主要指标、计算方法等做简要解释。统计表排列:每一章节从反映该领域主要情况出发编排统计表内容。统计表的排列顺序一般先是主要指标历史数据表,后为当年数据表。二、关于使用方法(一)年份按照惯例,书名中标注的年份为出版年份,年鉴中最新数据为上一年数据。例如,《北京统计年鉴2020》表示该年鉴为2020年出版,年鉴中最新数据年份截至2019年。统计表名中的“年份”主要有三种标识方法,分别代表三种含义:一是“表格名称(_年)”表示表内所列数据是包含了这两个年份之间的各年资料;二是统计表名中未显示年份,表示表内所列数据为当年和上年两年数据;三是“表格名称(年)”表示表内所列数据仅为某一年资料。(二)符号统计表中常见符号如下:#:表示总计中的其中项;有“#”号的分组指标表示总计的部分项目,无“表示该项指标数据不详或没有数据。***:means that the item is included in the total.Grouped indicators marked with “#”are part of the total,while those without “#” mean that sum of included items equals to the total.‖:grouping symbol,means that there are multiple ways of grouping the indicators.…:means that the figure is less than the minimum measurement unit of the table.Blank:means that the figure is unknown or unavailable.***:When it is possible to identity or infer the identity of the individual statistical respondent based on the data,it shall be shielded and indicated with “***”.(Ⅲ) Data1.Each chapter in this Yearbook consists of two parts:historical data tables and current year data tables.In principle,historical data that are shown in the historical data tables can be used continuously;for some historical data that have been adjusted,please refer to the latest yearbook;When using the data,it is necessary to refer to the Brief Introduction and the explanations on the change in method system,standards and scope in the Notes under the statistical tables.In the current year data tables,if the standards and scope,calculation method for the corresponding indicators,and certain data greatly differ from that of the previous year,they shall be explained in the Notes under the statistical tables.2.In the 2020 Beijing Statistical Yearbook,the data of 2018 on gross domestic product,energy,real estate,industry,construction,services,wholesale and retail trade,research and experimental development (R&D) and other relevant fields have been supplemented,and the relevant historical data have been revised according to the results of the fourth national economic census in Beijing.3.Compared with the 2019 Beijing Statistical Yearbook,adjustments have been made to the content of some chapters.Content related to the cultural industry has been moved to the Culture and Sports chapter.Revised historical data since 2001 on added value by sector are supplemented in the National Accounts part;historical data on natural gas consumption per RMB 10,000 of GDP and data on water used by industry above designated size by sector are added in the Energy,Resources and Environment part;historical data on trade in services are added in the Foreign Economic Relations and Trade part;historical data on PCT international patent applications,domestic patents in force and invention patents in force,and invention patent ownership per 10,000 persons,etc. are added in the Science and Technology part;historical data on educational funds are added in the Education part;historical data on added value of cultural industry and on the operation of cultural industry enterprises above designated size are added in the Culture and Sports part;and historical data on cases handled by procuratorial organs are supplemented in the Public Management,Social Security and Social Organization part.(Ⅳ) Electronic CD-ROMBeijing Statistical Yearbook is provided with a CD-ROM,which contains Chinese and English versions of this Yearbook.The CD-ROM helps users in working with and processing the data.(Ⅴ) The sum of some statistics or some relative numbers in this Yearbook might have certain calculation errors because of the choice of different units of measurement.All the statistics have not undergone mechanical adjustment.