SELECT COUNT("Grid") FROM table_34924 WHERE "Laps" = '14' AND "Time" = '+29.483'
What is the total grid number that has 14 laps and a time of +29.483?
CREATE TABLE table_34924 (
    "Team" text,
    "Driver" text,
    "Laps" real,
    "Time" text,
    "Grid" real
)