In its second weekend at the box office, Sylvester Stallone's adrenaline-fueled "The Expendables 2" remains supreme after earning $13.5 million over the weekend. On the other end of the spectrum, the conservative documentary "2016: Obama's America" has been quietly picking up steam as it adds more theaters.

While the sequel to 2010's "The Expendables" dominated the box office since opening last week, it isn't quite the blockbuster that its predecessor was. "The Expendables 2" has earned $52 million since opening, but the first "Expendables" outing had already earned over $65 million.

The 20 percent dive could be a strong sign that the film won't be as profitable as its predecessor. Considering that the sequel cost roughly $20 million more than "The Expendables," this could be a bad sign for the film's overall financial prospects.

Following "The Expendables 2" was Jeremy Renner's spy spin-off "The Bourne Legacy." In its third weekend, the film earned $9.3 million, giving it a total gross of $85 million. The stop-motion feature "ParaNorman" followed, earning $8.5 million for a $28 million gross.

In an odd move, the controversial anti-Obama documentary "2016: Obama's America" saw a major spike at the box office, despite being in its seventh week. The documentary picked up about 900 new theatres for the weekend, and the upgrade earned "Obama's America" $6.2 million. The 400 percent increase from last week shot the film up to eighth place at the box office.

A list of the weekend's top ten movies and their earnings is below.

1.      "The Expendables 2," $13.5 million

2.      "The Bourne Legacy" $9.3 million

3.      "ParaNorman," $8.5 million

4.      "The Campaign", $7.4 million

5.      "The Dark Knight Rises," $7.2 million

6.      "The Odd Life of Timothy Green," $7.1 million

7.      "Premium Rush", $6.3 million

8.      "2016: Obama's America," $6.2 million

9.      "Hope Springs," $6 million

10.   "Hit and Run," $4.7 million