According to the UT report, in 2015-16, the total number of OPD patients was 59.41 lakh which increased to 66.3 lakh in 2016-17.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/over-6880-lakh-opd-patients-visited-govt-health-facilities-chandigarh-report
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-chandigarh
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chandigarh
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-care
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health