Table:
text: 1992 IndyCar season
Races
Races
Rnd Race_Name Circuit City_Location Date_ Pole_position Fastest_lap Winning_driver Winning_team Report
5 ITT Automotive Grand Prix of Detroit The Raceway on Belle Isle Park Detroit, Michigan June 7 Michael Andretti Unknown Bobby Rahal Rahal-Hogan Racing Report
6 Budweiser/G.I.Joe´s 200 Portland International Raceway Portland, Oregon June 21 Emerson Fittipaldi Unknown Michael Andretti Newman/Haas Racing Report
7 Miller Genuine Draft 200 Milwaukee Mile West Allis, Wisconsin June 28 Bobby Rahal Unknown Michael Andretti Newman/Haas Racing Report
8 New England 200 New Hampshire International Speedway Loudon, New Hampshire July 5 Bobby Rahal Michael Andretti Bobby Rahal Rahal-Hogan Racing Report
9 Molson Indy Toronto Exhibition Place Toronto, Ontario July 19 Bobby Rahal Unknown Michael Andretti Newman/Haas Racing Report
10 Marlboro 500 Michigan International Speedway Brooklyn, Michigan August 2 Mario Andretti Unknown Scott Goodyear Walker Motorsport Report

Question: How many days did Michigan International Speedway hold a round in the 1992 IndyCar season?