Logic Puzzle: Pirates and Gold Coins

Here's a logic question from a friend.

5 pirates have to decide how to divide their loot of 100 gold coins. The rules are as follow:

• The most senior pirate gets to propose a way to divide the loot.
• Each pirate, including the most senior pirate himself gets to vote.
  
• If the majority agrees with the proposal, the loot will be divided as suggested.
• In the case of a tie, the proposal will be accepted.
• If the majority disagrees, the most senior pirate will be killed. The next most senior pirate gets to suggest. The process continues.

Now, you're the most senior pirate out of the five. How are you going to divide the coins so that you get the biggest share possible? (All pirates are perfectly logical and greedy.)