New game: Adaptation or original screenplay?

New game:
Which of these are adapted screenplays and which are original.

2002:
Gangs of New York
Adaptation
About a Boy
25th Hour

2003:
Thirteen
Pirates of the Carribean
Bend it Like Beckham
Big Fish
Last Samurai
House of Sand and Fog

2004:
Aviator
Finding Neverland
Birth
Woodsmen
Spanglish
Ray
The Motorcycle Diaries
Closer
Kinsey

2005:
In Her Shoes
Elizabethtown
Walk the Line
Munich
Good Night and Good Luck
Capote
Match Point
New World

2006:
Good German
Prairie Home Companion
Babel
Children of Men
Bobby

2007:
3:10 to Yuma
Assassination of Jesse James
Waitress
Away from Her
Michael Clayton
Into the Wild
Across the Universe
Great Debaters
In the Valley of Elah
American Gangster
Before the Devil Knows You're Dead
La Vie en Rose
Elizabeth and the Golden Age

2008:
Doubt
The Reader
Slumdog Millionaire
Tropic Thunder
Vickey Christina Barcelona

I will have the answers for you all shortly....