INDIANAPOLIS (AP) -- Productivity of recent Indianapolis 500 drivers, listed in order of percentage of laps completed out of all possible laps they could have driven (number of races in parentheses):

    100 percent -- Jeff Ward (1), 200 of 200 laps
    99.5 -- Billy Boat (1), 199 of 200 laps
    99.0 -- Robbie Buhl (2), 396 of 400 laps
    98.5 -- Robbie Groff (1), 197 of 200 laps
    97.2 -- Stefan Johansson (3), 583 of 600 laps
    95.0 -- Davey Hamilton (2), 380 of 400 laps
    92.5 -- Steve Kinser (1), 185 of 200 laps
    92.3 -- Hiro Matsushita (4), 738 of 800 laps
    91.0 -- Al Unser Jr. (12), 2,184 of 2,400 laps
    84.3 -- Arie Luyendyk (13), 2,192 of 2,600 laps
    82.6 -- Jimmy Vasser (4), 661 of 800 laps
    81.5 -- Michael Andretti (11), 1,793 of 2,200 laps
    81.5 -- Vincenzo Sospiri (1), 163 of 200 laps
    81.1 -- Raul Boesel (9), 1,460 of 1,800 laps
    80.7 -- Emerson Fittipaldi (11), 1,775 of 2,200 laps
    80.2 -- Hideshi Matsuda (3), 481 of 600 laps
    78.4 -- Davy Jones (5), 784 of 1,000 laps
    78.0 -- Tyce Carlson (1), 156 of 200 laps
    77.8 -- Eliseo Salazar (3), 467 of 600 laps
    77.2 -- Bobby Rahal (13), 2,007 of 2,600 laps
    75.6 -- Fermin Velez (2), 302 of 400 laps
    75.2 -- Scott Goodyear (7), 1,053 of 1,400 laps
    73.2 -- Lyn St. James (6), 878 of 1,200 laps
    72.9 -- Robby Gordon (4), 583 of 800 laps
    70.5 -- Tony Stewart (2), 282 of 400 laps
    69.4 -- Danny Ongais (11), 1,527 of 2,200 laps
    67.3 -- Eddie Cheever (8), 1,077 of 1,600 laps
    66.2 -- Alessandro Zampedri (3), 397 of 600 laps
    65.5 -- Dennis Vitolo (2), 262 of 400 laps
    65.5 -- Jack Miller (1), 131 of 200 laps
    63.3 -- Scott Sharp (3), 380 of 600 laps
    60.8 -- Scott Pruett (4), 486 of 800 laps
    58.5 -- Buddy Lazier (5), 585 of 1,000 laps
    58.0 -- Buzz Calkins (2), 232 of 400 laps
    57.9 -- Roberto Guerrero (13), 1,505 of 2,600 laps
    57.2 -- John Paul Jr. (6), 686 of 1,200 laps
    55.0 -- Billy Roe (1), 110 of 200 laps
    53.3 -- Johnny Parsons (12, 2 shortened by rain), 
            1,213 of 2,276 laps
    50.8 -- Mike Groff (4), 406 of 800 laps
    47.2 -- Marco Greco (3), 283 of 600 laps
    46.8 -- Jim Guthrie (2), 187 of 400 laps
    42.3 -- Stephan Gregoire (3), 254 of 600 laps
    39.5 -- Johnny Unser (2), 158 of 400 laps
    38.3 -- Mark Dismore (2), 153 of 400 laps
    30.0 -- Paul Durant (2), 120 of 400 laps
    24.0 -- Greg Ray (1), 48 of 200 laps
    4.5  -- Claude Bourbonnais (1), 9 of 200 laps
    0.0  -- Affonso Giaffone (1), 0 of 200 laps
    0.0  -- Kenny Brack (1), 0 of 200 laps
    0.0  -- Sam Schmidt (1), 0 of 200 laps