Batman Begins takes place in 2005. Based on this line by the Joker,
“Let's wind the clocks back a year: These cops and lawyers wouldn't dare cross any of you, so what happened? Did your balls drop off? I know why you choose to have your "group therapy" sessions in broad daylight, I know why you're afraid to go out at night: The Batman.”
1977 - Bruce is born
1982 - Ra's al Ghul has affair with warlord's daughter, daughter is condemned to the Lazarus Pit along with Talia
1985 - Bruce's parents are killed
Late 1980's/Early 1990's??? - Talia's mother is killed and Bane protects Talia allowing her to climb out of the pit. Ra's later comes back not to long after and pulls Bane out of the Lazarus Pit
Late 1990's/Early 2000's??? - Ra's excommunicates Bane from the League of Shadows which creates a strain between Ra's and Talia
2000 - Bruce watches Chill die and then leaves to learn how to fight criminals
2007 - The events of Batman Begins
2008 - The events of The Dark Knight
2012 - Bruce learns that his fusion reactor can be turned into a bomb by reading Dr. Pavel's paper, he hides the reactor and shuts himself up in his mansion and slowly drifts back into his Batman obsession.
2016 - 2017 (????) - The events of The Dark Knight Rises