给定一份电影名单，请按照票房收入对其进行排序。


电影名单：
1. Avengers: Endgame (2019) - $2.798 billion
2. Avatar (2009) - $2.790 billion
3. Titanic (1997) - $2.194 billion
4. Star Wars: The Force Awakens (2015) - $2.068 billion
电影名单按票房收入的排序： 

1. Avengers: Endgame (2019) - $2.798 billion
2. Avatar (2009) - $2.790 billion
3. Titanic (1997) - $2.194 billion
4. Star Wars: The Force Awakens (2015) - $2.068 billion