Here are the stats for people of Indian origin who have applied for a green card and waiting due to the current backlog.

Primary applicants from India for each year Based on the PERM(Labor) certification

Sources for the PERM(Labor) data is from the official Gov Agencies

FY 2009https://www.foreignlaborcert.doleta.gov/pdf/2009_Annual_Report.pdfPage 19
FY 2010https://www.foreignlaborcert.doleta.gov/pdf/OFLC_2010_Annual_Report_Master.pdfPage 25
FY 2011https://www.foreignlaborcert.doleta.gov/pdf/2011AR_FINAL.pdfPage 24
FY 2012https://www.foreignlaborcert.doleta.gov/pdf/OFLC-2012_Annual_Report-11-29-2013-Final%20Clean.pdfPage 24
FY 2013https://www.foreignlaborcert.doleta.gov/pdf/OFLC-2013_Annual_Report.pdfPage 27
FY 2014https://www.foreignlaborcert.doleta.gov/pdf/OFLC_Annual_Report_FY2014.pdfPage 22
FY 2015https://www.foreignlaborcert.doleta.gov/pdf/OFLC_Annual_Report_FY2015.pdfPage 22
FY 2016https://www.foreignlaborcert.doleta.gov/pdf/OFLC_Annual_Report_FY2016.pdfPage 21
FY 2017https://www.foreignlaborcert.doleta.gov/pdf/PerformanceData/2017/PERM_Selected_Statistics_FY2017.pdf

Green card applicant distribution by profession