I have compiled some historical data on the UC Davis waitlist in years past.
(Also, if interested, here is the waitlist data I compiled for:
UC Santa Cruz: **uc santa cruz class of 2025 discussion** - #574 by 20172021
UC Santa Barbara: UC Santa Barbara Class of 2025 — Regular Decision - #498 by 20172021)
The wait list data for UC Davis from the common data sets (CDS) was found on this page: Common Data Set (2018-2019); and also on Wikipedia: University of California, Davis - Wikipedia (see Reference notes #79-84 for years 2012-2013 through 2017-2018). I was unable to find one page with all the Common Data Sets for UC Davis on one page at the UC Davis website. The data comes from question C2 of the CDS.
Data is listed in this order:
Common Data Set year (CDS 20XX-XX)
Number of qualified applicants offered a place on the waiting list (Off)
Number accepting a place on the waiting list (Acc)
Number of wait-listed students admitted (Adm)
Calculated % of students admitted off waiting list (% Adm)
CDS 2019-20
Off: 10,639
Acc: 3,458
Adm: 1,953
% Adm: 56%
CDS 2018-19
Off: 9,213
Acc: 3,207
Adm: 24
% Adm: 0.7%
CDS 2017-18
Off: 8,263
Acc: 2,922
Adm: 435
% Adm: 15%
CDS 2016-17
Off: 9,381
Acc: 3,112
Adm: 2,571
% Adm: 83% (Highest admit rate off the wait list.)
CDS 2015-16
Off: 9,033
Acc: 2,733
Adm: 2,030
% Adm: 74%
CDS 2014-15
Off: 6,352
Acc: 2,177
Adm: 12
% Adm: 0.6%
CDS 2013-2014
Off: 6,604
Acc: 2,087
Adm: 1,071
% Adm: 51%
CDS 2012-2013
Off: 6,911
Acc: 2,655
Adm: 12
% Adm: 0.5% (Lowest admit rate off wait list.)