I don't know if you also have note this: frozen actually rank #18 in the billion club but rank #4 considering only original releases:
1 Avatar Fox $2,782.3 ORIGINAL
2 Titanic Par. $2,186.8 ORIGINAL
3 Marvel's The Avengers BV $1,518.6 FRANCHISE
4 Harry Potter and the Deathly Hallows Part 2 WB $1,341.5 FRANCHISE
5 Iron Man 3 BV $1,215.4 SEQUEL/FRANCHISE
6 Transformers: Dark of the Moon P/DW $1,123.8 SEQUEL
7 The Lord of the Rings: The Return of the King NL $1,119.9 SEQUEL
8 Skyfall Sony $1,108.6 FRANCHISE
9 The Dark Knight Rises WB $1,084.4 SEQUEL
10 Pirates of the Caribbean: Dead Man's Chest BV $1,066.2 SEQUEL
11 Toy Story 3 BV $1,063.2 SEQUEL
12 Pirates of the Caribbean: On Stranger Tides BV $1,045.7 SEQUEL
13 Jurassic Park Uni. $1,029.2 RE-RELEASED IN 3D (2013)
14 Star Wars: Episode I - The Phantom Menace Fox $1,027.0 PREQUEL
15 Alice in Wonderland (2010) BV $1,025.5 ORIGINAL
16 The Hobbit: An Unexpected Journey WB $1,017.0 PREQUEL
17 The Dark Knight WB $1,004.6 SEQUEL
18 Frozen BV $1,001.5 ORIGINAL
if you agree that my classification is correct, it must be recognized that Frozen's box office performance is truly amazing.