In which year did Jackie Joyner-Kersee set the heptathlon world record of 7,291 points?

Jacqueline Joyner-Kersee (born March 3, 1962) is an American retired track and field athlete, ranked among the all-time greatest athletes in the heptathlon as well as long jump. She won three gold, one silver, and two bronze Olympic medals, in those two events at four different Olympic Games. Sports Illustrated for Women magazine voted Joyner-Kersee the Greatest Female Athlete of All-Time. She is on the Board of Directors for USA Track & Field (USATF), the national governing body of the sport.

In the 1988 Summer Olympics in Seoul, Korea, Joyner-Kersee earned gold medals in both the heptathlon and the long jump. At the 1988 Games in Seoul, she set the still-standing heptathlon world record of 7,291 points. The silver and bronze medalists were Sabine John and Anke Vater-Behmer, both of whom were representing East Germany. Five days later, Joyner-Kersee won her second gold medal, leaping to an Olympic record of 7.40 m (24 ft 3 1⁄4 in) in the long jump.