Number crunching done by a trackitt user (ABar15). An interesting read.
https://www.trackitt.com/usa-discuss...page/last_page. Copy pasted here below.
Spillover Visa Numbers: Caveats & Bottlenecks
Sources:
https://www.uscis.gov/sites/default/...ry_FY09_19.pdf
https://travel.state.gov/content/dam...its-FY2021.pdf
260,000 spillover visas from 2020:
Category Allotted visa
EB1 74932
EB2 74932
EB3 74932
EB4 18602
EB5 18602
2018 2019* 2020** 2021** Total
EB1 India 7,523; 7,181; 7,000; 7000; =28704
China 4,525; 2,689; 3,689; 3,500; =14403
EB2 India (2009-21) 6,674; 15,313; 22,286; 22,311; 21,440; 25,634; 32,702; 49,054; 42,359; 40,317; 44,000; 44,000; 44,000; =410090
China (2016-21) 7,472; 6,289; 8,036; 10,000; 10,000; 10,000; =51797
EB3 India (2010-21) 6,682; 6,929; 4,110; 3,455; 3,878; 6,451; 10,179; 8,868; 8,279; 10,905; 11,000 11,000; =91736
China (2017-21) 4,412; 4,200; 3,722; 3,500; 3,500; =19334
*2019 projection based on the pending cases
** 2020 & 2021 projections based on the 2016-2019 trend
=Total.
Observations:
Total approved EB1 I-140s for India=28000 & China=14500
EB1 vertical spillover to EB2 => 75,000
Visa numbers available to EB2=> 75000 + 32500 = 107,500
Total approved EB2 I-140s for China (up to 2020) = 41,500
EB2 Visas available to India => 107,500 - 41,500 = 65,500
Total approved EB2 I-140s (India) from 2009-2013 = 88,000; However, 20% of the approved visas might have upgraded to EB1 or downgraded to EB3. Therefore, active EB2 I-40s could be around 70,000.
If 1/3 of EB2 from 2013 to 2015 are downgraded to EB3, the number of downgrades would come around 25,000.
Total approved EB3 I-140s (India) from 2010-2016 = 41,500 & Downgrade from EB2 to EB3 = 25,000
Conclusion: As per my assumption, the EB1 will remain current hereon; EB2 may move up to 2015 by Sept 2021; and EB3 may move up to 2016 by Sept 2021.
Bottleneck:
There are only 150 working days are left for USCIS in this year to process almost 260,000 visas. It means USCIS has to issue approximately 1750 visas every working day. It would be a daunting task for USCIS.
Caveats:
1. I am not sure about the USCIS policy about how it will distribute the 260,000 visas between India and China. In other words, would USCIS push India EB2 more aggressively over China?
2. I am not sure about how much El Salvador and Mexico would use the EB4 and EB5 visas. If any visas left in EB4 and EB5 will also undergo vertical spillover to add to the EB2.
3. The 7% visa quote from the current year still applicable to India and China. So, the visas from the current year also helps to move the EB2 and EB3 a little further.