by the early 2000sin 201112 the document was 485 pages spread over thirteen chapters and the statistical appendix in 201314 the statistical appendix was separated out and published as a separate volumein the following year the survey was presented as two volumes volume 1 had a number of chapters addressing topical policy concerns while volume 2 carried the traditional economic survey along with the statistical appendixthis format was continued till last year with the length of the document steadily going upmoreover an attempt was made in the last three surveys to ensure that the volume 1 chapters adhered to a broad theme rather than appearing as standalone papers the economic survey 202021 consisted of 335 pages in volume 1 368 pages in volume 2 and a statistical appendix of 174 pages a total of 877 pagesthe two volume format did allow space for bringing in new ideas and themes but at almost 900 pages it was also becoming unwieldy it was also felt that the thematic chapters of volume 1 were not adequately linked to the sectoral chapters of volume 2therefore this years survey reverts to a single volume plus a separate volume for the statistical appendix sanyal said in the preface to the surveyalong with the sectoral chapters a new chapter has been added that demonstrates the use of satellite and geospatial images to gauge various economic phenomenon urbanisation infrastructure environmental impact farming practices and so onthe idea of having a separate volume for the statistical appendix is to give it a distinct identity as the onestop source of authentic datait is hoped that it will evolve in the next few years to include new kinds of socioeconomic data in line with the emphasis on a feedback loop approach he added