Box Office Mojo's list of 3rd weekends:
http://www.boxofficemojo.com/alltime/weekends/moreweekends.htm?page=3&p=.htm
1
Star Wars: The Force Awakens
BV
$90,241,673
9.7%
4,134
$21,829
$930,757,012
12/18/15
2
Avatar
Fox
$68,490,688
9.1%
3,461
$19,789
$749,766,139
12/18/09
3
Marvel's The Avengers
BV
$55,644,102
8.9%
4,249
$13,096
$623,357,910
5/4/12
4
Jurassic World
Uni.
$54,532,615
8.4%
4,198
$12,990
$652,270,625
6/12/15
5
Spider-Man
Sony
$45,036,912
11.2%
3,615
$12,458
$403,706,375
5/3/02
6
The Dark Knight
WB
$42,664,219
8.0%
4,266
$10,001
$533,345,358
7/18/08
7
Avengers: Age of Ultron
BV
$38,859,900
8.5%
4,276
$9,088
$459,005,868
5/1/15
8
Shrek 2
DW
$37,931,716
8.6%
4,131
$9,182
$441,226,247
5/19/04
9
Iron Man 3
BV
$35,770,094
8.7%
4,237
$8,442
$409,013,994
5/3/13
10
The Dark Knight Rises
WB
$35,737,330
8.0%
4,242
$8,425
$448,139,099
7/20/12
Zootopia should slide easily into that #7 spot.