In spring 2002, an electronically traded futures contract on the stock index, called an E-mini future, was

Question:

In spring 2002, an electronically traded futures contract on the stock index, called an E-mini future, was introduced. The contract was one-fifth the size of the standard futures contract, and could be traded on the 24-hour CME Globex electronic trading system. Why might someone introduce a futures contract with these properties?